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| # | Post Title | Result Info | Date | User | Forum |
| Answer to: Is top tier gas real? | 22Relevance | 4 years ago | Kaizen | Submit Your Question HERE | |
| The history of Top Tier gas is interesting. It was initially a private affair, where automakers that had this then new technology called fuel injection, recommended certain brands that had detergents in them. To help keep their injectors clean. Government stepped in and created a minimum standard for detergents. Some gas brands lowered their standard. Some kept with higher standard. Supposedly, cars using the lower government standard got their fuel injectors clogged up more often than the higher standard. Top Tier gas label was created to help differentiate this higher standard of detergents in gas. Which was also higher than the government standard. In theory, non Top Tier gas could contain just as much detergent, it just doesn’t have the label. Then again, it could not. And it is a station by station basis for that. My personal preference for gas is Top Tier from a well kept and clean gas station. I usually default to Costco gas. Which meets this criteria. At a cheaper price than most brands. If this is not available where I am road trip traveling, once in a while I will use Love’s or Pilot’s, only because their travel centers are nicer than regular gas stations. Love’s or Pilot’s are not Top Tier. In your owners manual, some car makes actually recommend Top Tier gas. | |||||
| High octane gas probably did some damage to my car | 22Relevance | 6 years ago | Cloud Shade | Submit Your Question HERE | |
| Hello! I know, it's a little strange to write here because I'm from Russia, and no one probably heard about my car model, but anyway... It's a 2008 Lada (VAZ) Samara 2114, four cylinder, eight valves. So, I was running 95-octane gas and was pretty happy with it. The car was rated to run on such gas, so everything went fine. Beforehand I had an intercooler replaced, because it started leaking. With a new intercooler, my car was still getting pretty hot, especially with 95 gas. It was very apparent when idling at stop lights - the fans were engaging and it was very noisy. My point is, on 92 gas it was better. Well, at least in terms of temperature... But when I went back to 92 to remove the overheating problem, my car lost torque. It was especially apparent when trying to start from a stand-still. Pressing the throttle all the way and not getting the power made me nervous, and yeah... I went to a gas station and bought some high octane gas. Not 95, not 98, but 100 gas. The highest you can get in Russia. And then true problems began... After starting the engine next day I noticed huge misfiring problems. The engine was vibrating like crazy, stalling while idling. But I still had to drive, so that's what I did. I was driving 80-90 km/h on a highway for 10 minutes, and after stopping at a stop light, i noticed steam coming from my engine. The coolant was fine, 92 degress Celcius. But the engine sure did overheat. I went to a parking lot to investigate, and sure thing, there was a lot of steam, and some cylinders turned off due to multiple misfires happening. So, I guess, high octane gas does damage to lower octane rated cars? I have already filled my car with 95 gas, but there is still some 100 gas in the tank. The engine also started making squeaking noise after that highway ride. The noise is almost like when a generator belt gets wet and misses the gears, but not as loud and very constant. Can I do something to fix the overheating? Does the noise go away over time as the engine cools down and stops getting 100 fuel? I'm really worried. My car already has 220000 km of mileage (kilometrage, sorry!) and the engine was damaged by extreme overheating once (when the radiator leaked, all my coolant went away and my engine was running with no coolant for 15 minutes of high speed driving on the highway). It had the same squeaking noise after running like that, but in the end it stabilized, the noise went away and happy end! Don't know about this time, though... Thanks in advance, Aleksandr from Podolsk, Russia! | |||||
| RE: 2019 Lexus GX460 - Premium or Regular gas? | 21Relevance | 3 years ago | Whatchamacallit | Submit Your Question HERE | |
| I have not seen "required for best performance" in manuals. When I was shopping for a Lexus GS it said "Premium gasoline required". My 2000 Acura Integra's manual says "Premium gasoline required". Nothing was mentioned about "for best performance". . OP will have to read his manual and see what it says. | |||||
| Answer to: Do all turbos require premium fuel | 21Relevance | 5 years ago | Justin Shepherd | Submit Your Question HERE | |
| Back in the old days, when cars had carburetors and turbos/ superchargers, you had to put premium in them, or the engines could destroy themselves via fuel detonation, which is commonly called knocking. They had no computerized fuel injection or variable valve timing to help reduce this. My 1979 Pontiac Catalina has a 301 V8 is carburated with an 8.5:1 compression ratio and it's naturally aspirated, so putting premium in my car would be an absolute waste of money. The engine can't adjust for the higher octane, and it doesn't have high compression or forced i ... | |||||
| Answer to: Putting regular gas instead of premium | 21Relevance | 5 years ago | Mod_Man | Submit Your Question HERE | |
| Always use what is recommended by the manufacturer. If you can't afford premium fuel, you shouldn't have purchased a Mercedes. That's the honest truth of it. You think premium is expensive...go ahead and fill it with regular. And when you have to have the engine worked on for the damage done, you'll learn what expensive REALLY is. As someone who is around these cars day in and day out, I'm telling you: German cars are NOT like their American or Japanese counterparts. They are extremely sensitive, maintenance-heavy machines that have to be serviced and mai ... | |||||
| Answer to: Premium octane gas | 21Relevance | 5 years ago | Mod_Man | Submit Your Question HERE | |
| Not in current times. The regular fuel has the same detergents as premium, just in different amounts. It is, however, true that cars that require premium fuel will have issues if running regular, up to and including engine destruction. | |||||
| Premium octane gas | 21Relevance | 5 years ago | Francesco Savanti | Submit Your Question HERE | |
| Hi Scotty, You mentioned that today's cars will run fine on 89 or 93 octane but engines that are recommended to use premium fuel will have less pick-up. Is it true that premium octane fuel burns cleaner than the low octane and will keep things from getting gunked up? Francesco | |||||
| Answer to: Octane boost vs premium gas | 21Relevance | 6 years ago | Whatchamacallit | Submit Your Question HERE | |
| If only it were that simple, then we’d be doing it too. (You must be on to a secret.) Stick to the premium gasoline in your area. A 2018 Lincoln MKZ with Black Label (highest trim for that vehicle) is a premium vehicle, definitely not cheap brand new. Why get a vehicle like that and then cheap out on gasoline or look for a shortcut? | |||||
| Answer to: Acura and premium gas | 21Relevance | 6 years ago | toyotagrl | Submit Your Question HERE | |
| I disagree that premium is not much more expensive than regular....that really depends on where you live (used to be only 20 cents more, but not anymore)....Here in NC premium is nearly $1 more per gallon than regular. So for a 10 gallon fill up that's $10 more. Over time that adds up quick. If the Acura doesn't have forced induction (turbo or supercharer) than regular is fine...or split the difference and go mid-grade. | |||||
| Answer to: Do I need premium gas? | 21Relevance | 6 years ago | Whatchamacallit | Submit Your Question HERE | |
| With modern cars and engines, you don’t have to worry about making any adjustments yourself. That engine was designed to work optimally with premium, and with reduced power if using lower octane fuel. Also, do you get any knocking or any codes with the 87? In any event, it should be fine putting in premium now. | |||||
| Answer to: Do I need premium gas? | 21Relevance | 6 years ago | Kerem | Submit Your Question HERE | |
| Use whatever the manufacturer recommends in your owners manual. 91 octane level is premium in my state, so I would use premium. Using lower octane would decrease the performance of the engine by messing with the timing of it. | |||||
| Premium gas | 21Relevance | 6 years ago | Sfmg5440 | Submit Your Question HERE | |
| I was just watching a review of the 2021 Mazda3 turbo, the tester stated he couldn't get the car to do the advertised 0-60 time of 6 seconds, then he stated that the car probably not been refilled with premium fuel and that would cut the power by 40hp. How does the car know if it's got premium in it? does it just go off the knock sensors and it retards the timing till it stops? | |||||
| Answer to: Premium Gas | 21Relevance | 6 years ago | Figmund Sreud | Submit Your Question HERE | |
| Check the inside of your fuel fill door. Does it have an OEM sticker saying, "Premium Fuel Recommended"? Examples I sampled had those stickers on, … all manuals. Anyway, TSXs are pretty racy sedans, … higher tuned than an average Honda out of the factory. If yours is in pretty good shape, you will actually get a bit better efficiency with premium fuel, … that is, if you don’t flog it! [ … very, very hard not to do!] F.S. | |||||
| Answer to: Can I use regular gas? | 21Relevance | 3 years ago | Justin Shepherd | Submit Your Question HERE | |
| Use what the owner's manual says. If premium fuel is required, put in premium. You can't drive an Acura and skimp on regular gas if the owner's manual says premium fuel required. Those are rich people cars. | |||||
| Which gas should i put in my car | 21Relevance | 5 years ago | 27vasquez | Submit Your Question HERE | |
| ... because of you I bought my dream car..I always put premium fueled in my car from 76 gas station... My question is this..do you recommend putting premium fueled as the car gets more miles or should I start putting unleaded plus or regular? My fueled cap say premium is highly recommended please help | |||||