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| # | Post Title | Result Info | Date | User | Forum |
| Is Premium Gas Helping My Catalytic Converter | 52Relevance | 5 years ago | Rachel | Submit Your Question HERE | |
| I have an automatic 04’ Mazda Tribute 3.0L V6 with +240,000 miles on it. in Dec. 2020 my check engine light came on for catalytic converter low reading for both bank 1 & 2. (2 separate readings) I used a bottle of cataclean & started putting premium gas. (I don’t remember why I decided to use premium gas. I think a friend advised me because I was getting bad gas mileage) I did this before I watch your & ChrisFix videos about the different gas types & reading in my owners manual saying to only use regular unleaded gas. After a couple of weeks ... | |||||
| Answer to: Premium versus Regular in GS350 F sport 3.5 V6 306 HP 11.5 | 50Relevance | 5 years ago | Mod_Man | Submit Your Question HERE | |
| If the car calls for premium gas, you want to run premium gas 100% of the time to prevent engine knocking amongst other things. If it calls for regular gas, run that. Cheaping out on gas when you buy a $50k+ dollar car makes zero sense. Use the gas recommended by the manufacturer. Everybody has an opinion on fuel, but unless they were on the engineering team that built your motor their opinion is irrelevant. If you use low octane in a car that calls for premium and you have an issue, the dealer will void any warranty repairs. And no, you cant just fill i ... | |||||
| Answer to: Premium Gas | 49Relevance | 5 years ago | Razmig Bartassian | Submit Your Question HERE | |
| premium gas is not a waste of money depending on what your engine takes. People are misunderstanding the word "premium" for gas. There are three tiers of gas: regular, mid-grade, and premium. It has nothing to do with the QUALITY of the gas. It's all about the octane rating. Regular is 87 octane, mid-grade is 89 octane, and premium is 91/93 octane depending on where you live. If your engine knocks like crazy with 87 octane, then try a higher octane. After all, octane rating is the measurement of gasoline's anti-knock index. The higher the octane, the more re ... | |||||
| Answer to: Acura and premium gas | 43Relevance | 5 years ago | Chuck Tobias | Submit Your Question HERE | |
| From what I've seen premium fuel is "recommended" by Acura but only "required" for the Acura NSX. For most modern cars where premium is recommended the engine control system will adjust to whatever grade of gasoline is used, and will just deliver less power and a little less gas mileage with regular. That matches my own experience with a turbocharged vehicle where premium gas is recommended. It definitely is zippier with premium fuel but does not complain if regular is used. | |||||
| Answer to: Jerking | 36Relevance | 5 years ago | scottykilmer | Submit Your Question HERE | |
| well one did not run that car on premium gas it's made for regular gas premium gas actually can make a car like that run worse so go back to the normal gas and pray it's just that.those hybrids are so complex when they start to have problems since they have two running systems electric and gasoline so many complex problems can occur prey it's just cuz you put premium gas which actually Burns slower than the regular gas because high compression engines that need premium gas need gasoline it won't explode under higher pressure where the cheaper gas actually Bu ... | |||||
| Answer to: Acura and premium gas | 34Relevance | 5 years ago | AD99 | Submit Your Question HERE | |
| Since it says premium gas recommended and not required, you could put regular gas in it and the car will run fine. But, you will get the best gas mileage and performance if you use premium, since that’s what the manufacturer recommends for the car. I would suggest to use premium since that’s what Acura has recommended. It’s not that much more expensive than regular gas and you’ll get the full efficiency and performance out of the car. | |||||
| Running premium gas in a 2020 Kia Forte | 34Relevance | 5 years ago | turbonerd9615 | Submit Your Question HERE | |
| I put a tank of shell premium gas in my car yesterday and my car is running a lot better I mean it wasn't running bad to begin with but now it's got more acceleration and it just seems to run smoother. I know I’ve heard on older cars to put premium gas in your car every once in a while put premium gas in your car to clean it out. The tank before this one I put some fuel injector cleaner with regular gas as usual and didn’t notice a difference. Why is this? | |||||
| 89 Premium gas or 87 regular gas? | 31Relevance | 3 years ago | Throaty | Submit Your Question HERE | |
| 1996 Nissan Maxima GLE, 130K miles, Automatic, No codes Owner's manual recommends premium gas. I've been using 89 premium gas. Is it okay to switch to 87 regular gas instead? | |||||
| Answer to: Do all turbos require premium fuel | 29Relevance | 5 years ago | infinitifxfan | Submit Your Question HERE | |
| Taking the Civic sedan and hatchback from 2020 as an example, the sedan with 174 hp from the 1.5T uses regular gas but the hatchback with the same engine but 180 hp recommends premium gas meaning that you should put premium but you can also get away by putting regular. If the car requires premium gas, then u must do so. Stick to what they say. | |||||
| Answer to: Should I use premium gas | 48Relevance | 2 years ago | MountainManJoe | Submit Your Question HERE | |
| ... what's in the gas. Youtubers sponsored by Shell , right? No, of course I don't trust social media "influencers". They're usually shills. Maryland Fuel Testing Laboratory, chemists compared 'Mobil" gas (Top Tier) to a Liberty station. "By and large, it's one and the same. … You will find results will almost mirror each other," said Bob Crawford, who works at the lab. "There are going to be slight variations -- but gasoline is gasoline." Steve Mazor, chief automotive engineer with the Automobile Club of Southern California, summed it ... | |||||
| Answer to: 2011 Lexus rx350 premium gas?? | 38Relevance | 3 years ago | Hixster | Submit Your Question HERE | |
| First, I was wrong and I apologize. Secondly, your gas cap may say "Premium Fuel Required" but that's also incorrect. From the 2011 Lexus RX350 handbook page 606: "Your vehicle must use only unleaded gasoline. premium unleaded gasoline with an octane rating of 91 (Research Octane Number 96) or higher required for optimum engine performance. If 91 octane cannot be obtained, you may use unleaded gasoline with an octane rating as low as 87 (Research Octane Number 91). Use of unleaded gasoline with an octane rating lower than 91 may result in engine knocking. ... | |||||
| RE: 89 Premium gas or 87 regular gas? | 29Relevance | 3 years ago | Throaty | Submit Your Question HERE | |
| BTW please disregard 89 premium gas. It should be 91 premium gas. : ) | |||||
| Answer to: Do I need premium gas for an old Lexus | 29Relevance | 5 years ago | Mod_Man | Submit Your Question HERE | |
| If the manual says "Premium Required", you have to run it. If the manual says, "Premium Recommended", you can run lower octane but will lose MPG and performance. Long term use of low octane fuel in a motor designed for high octane will damage the motor. Do not buy a premium luxury sports car if gas expense is a concern....that would be the best advice. | |||||
| 7-8MPG city driving First car 2004 Camry LE | 28Relevance | 4 years ago | Chrysaor Chronos | Submit Your Question HERE | |
| Posted this on reddit aswell for some help but have added more info here. HELP 6.7 MPG ON MY FIRST CAR (2004 Camry LE). I WAS SCAMMED AND COULD USE SOME HELP! Well guys here's my story. The 5th of July, I bought my first car a 2004 Camry with 160 000 km which is around 100k miles. Paid 3.5k cash CAD$ from a garage. It seemed like a good deal and I got it checked/inspected at another garage where my stepdad was working. Missing Link kit and only ac blowing warm air to have fixed. They fixed it and I bought it the very next day. I was pretty desperate because I have been biking to work everyday for 20 minutes during raining days and thunderstorms... It’s been 6 days that I’ve had the car under my name and I filled the tank to full with 100$ and 150km (93 miles) later I’m almost out of gas 1/4. I went to see the my stepdad and he said the gas tank is faulty and has oil leaking out. Went to the garage who sold me the car and they said that everything is fine and that it’s normal. I tried telling him that it really wasn't but he didn't care, he already has my cash and with no contract or sellers agreement whatsoever he won't go out of his way to fix it. Soo far on the first full tank fuel up I'm getting approximately 6.77 mpg or 2.9 km/L. It sucks but I'm glad to finally have a car. I was really looking forward to working on all the scratches and rust on the car and cleaning the interior but I have bigger issues to deal with right now unfortunately. the issue is most likely a gas leak combined with horrendous gas economy. *The odometer is in kilometers because I am living in Canada, Qc - What can I say about the car. It idles at 1k rpm, I notice the gas gauge go down a bit when starting the car in the mornings and it also smells like gas when I start it up in the mornings and when I stop at a light with my windows rolled down I can smell the gas again. It also has a tiny bit of white smoke that comes out when I start it.( around this much). - I have checked the Air filter and its brand new. - The o2 sensor looks pretty clean, but I will be purchasing a CRC 05110 Mass Air Flow Sensor Cleaner - I'm going to clean the Throttle Body with CRC 05078 Throttle Body and Air-Intake Cleaner - I have bought Mobil 1 High Mileage Synthetic oil to change soon, because the oil is kind of black/dirty but I am waiting to receive an Oil Filter thePurolator PL14477 ONEto be exact and I also am trying to find the right washer and *screw* or *bolt* to replace the old one. - I am going to change the Cabin Air filter tomorrow when I receive it - I will try to purchase an OBD2 scanner with live data stream” and evap test or o2 sensor test as well The mechanic say that there is a leak or crack in this part of the Fuel tank and says that it smells of fuel but it is not leaking and does not have any smell when I rubbed my hands against it and smelt it. I will be posting an image of the actual fuel tank later. But for now, This is where he said it was leaking from. *Where the metals of each side kind of touch. and are sealing the tank I know that I should probably listen to the mechanic, but I want to try out any other possible options that won't be costing me an arm and a leg to fix. Which is why I am also going to try check the pcv valve and change it if necessary. I am also going to be using my dads pump to check if the tires are properly inflated. I have been looking under my car every day for and drips or leaks when I move it in the morning and I never see anything. Other than all of this I'm open to any other ideas that you guys might have. I drive very conservatively as in don't try to press the gas too fast and don't really use A/C that much. My commute is 10 minutes of city driving which is pretty short, but it still doesn't explain 7mpg or 3km/L. I also had a good recommendation from a comment on the facebook post I made, if I ever do need to change out the whole gas fuel tank I'll go see if I can buy one from an scrap yard *Edit 12/07/2022 6:24pm First of all, I was not expecting this post to get so many people trying to help me out in the comments and would like to thank everyone who has read, shared and posted a comment trying to give pointer or advice to me. I have just read all the comments and replies and have some pretty bad news. The useru/Call_Me_At_8675309explained that the car might have had the CEL removed or tampered with so I went to check the dash with the key on-engine off and he was right sadly enough the car was sold to me without the ABS light, Maintenance required light and without the CEL. I had no clue that cars did that and am probably over my head for repairs but I'm grateful to at least know why I’m burning threw gas. The display always shoes these 2 signs below for gas and battery I think I will be buying the BlueDriver Bluetooth Pro OBDII Scan Tool from amazon (120$) but I think that it’s going to be a worth investment. Here is what my gauge looks like after roughly 10km of me driving to work Canadian tire to set up a rendezvous this weekend for a carburation system inspection (60$) and back. You guys can compare it to the initial picture above to see where it was sitting at last night Here are some answers to some questions regarding people giving advice but needing some more information or details. -Is somebody siphoning my gas: I doubt it because my parents have a home security camera and when I looked at the past nights with my car parked and I saw nobody siphoning my gas. What type of gearbox is it: Automatic Do I drive in D: Yes Do I disengage the hand break when driving: Yes Is my transmission shifting through all gears: Yes Is my gauge Faulty: Not sure A quick question when I open the gas cap, should I hear or feel pressure being released? Thank you guys for all the help and sharing advice on what I should do in this situation. *2nd Edit 3:11 Pm 13/07/2022 Updates - First of all, I rechecked some stuff like the MAF Sensor. I could of sworn that the MAF sensor looked pretty good but when I rechecked it today to be sure it's actually super dirty. - The gas this morning in the gage was noticeably lower than how I left it last night here is a picture I took this morning ***Before I went to work. Same Km on the trip 160.8 No leaking gasoline under the car though. - I listened to the fuel injectors each one of them (4 total) in my 2004 Camry LE 4cyl. They sound perfectly good. I referenced myself with Chris Fix's video titles " Testing Fuel Injectors Fast" - I have yet to change the oil because I am still waiting on the oil filter from amazon and the oil drain plug gasket. - The dash also gives me the Charging system warning light and also the Low engine oil pressure warning - Here is a video where I show the PCV valve hose, which im not sure if it's tight enough but wasn't able to tighten it and fit it close to close up. And you guys can also hear a really loud sound constantly coming from the engine. It sounds like air in a radiator but its coming from about the top of the spark plugs. Near the end you can kinda hear the Fuel Injectors but it's not really clear on my phone audio. (HEADPHONE USERS WARNING THE VIDEO WILL BE PRETTY LOUD) -The idle rpm for my car was actually around 500-650 rpm. It starts initially at 1.5k then goes down I guess. -This is what the oil currently looks like and why I'm going to change it - I have changed the Cabin filter and that's about all of an update I can give for today! *3rd Edit 12:09 am 15/07/2022 - Just bought the MAF sensor cleaner and will be using it tomorrow to clean the sensor and the throttle body. - I have went back to the garage who sold me the car and tried to explain that the mileage that I am getting is not normal and that something is wrong. They said to come back with the tank near empy. Hopefully they will check it out but I am seriously doubtful. I will try to go tomorrow after work if I finish early because my low fuel light is on. I will be letting you guys know what happens tomorrow if I end up going to the garage. If not this weekend I have a rendezvous at Canadian Tire for them to check my carburation system?(60$) I asked for them to check for leaking gasoline anywhere and that's what the paper say's that they're going to check. Thank for any help you guys and stay safe on the road! *4th edit 1:27am 24/07/2022 Soo far I've changed the oil, oil filter, air filter, cabin filter and am going to order spark plugs and a fuel filter pretty soon. I brought it to a garage that sold me the car and they changed the fuel injectors with other used ones and at another garage checked out the car and they suggest changing the fuel tank. Here are some unusual numbers from scanning the car on Idle my STFT is 19.5% and LTFT 44.5% at 664rpm. MAF rate 2.76g/s and codes are P0171 (system too lean bank 1), P2195 (o2 sensor signal biased stuck lean) and P2238. Any suggestions? Thank you guys and take care! | |||||
| 2011 Lexus rx350 premium gas?? | 27Relevance | 3 years ago | Robby9 | Submit Your Question HERE | |
| Hello, I recently bought a 2011 Lexus Rx350. On the gas cap it says premium fuel required. In thr manual it says the same. Doesn’t use the words recommended, it says required. The Toyota Highlander uses the same engine and transmission but is fine with regular. The highlander has 5 less HP. Is it ok if I use regular gas? premium gas is .30 cents higher per litre in Canada. Ive put regular in Twice and no knocking. | |||||
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