I hope this question makes it to Scotty Kilmer.. I have 2 slightly high mileage 2005 Corollas (91K & 143K)... I have been using "blend" oil but since "full" is reasonably priced especially Valvoline, should I go ahead and switch to full synthetic "high mileage"? Any and all opinions appreciated... Thanks!
P.S. I actually switched to full synthetic on the 91K Corolla not long ago but I hardly drive it... I was also told to buy a Mobil 1 filter which I did because the synthetic will do a bit of cleaning like a detergent oil would so a good filter is needed to catch the particulates... Important note: That car given conventional Castrol 5W30 since day one then I switched to synthetic...
please search the forum. This has been answered probably a hundred times.
https://carkiller.com/scottykilmer/qa/read-this-first/#post-248073
in fact it was asked just two days ago
https://carkiller.com/scottykilmer/qa/2017-mazda-3-0w20-oil-type/
Don't listen to marketing crap like "blend" and "high mileage"
Yes go full synthetic is a good idea. It is getting hard to get conventional now anyway.
Good call on the mobil 1 filter, either the 10k mile or 20k is a good one, but don't drive it that far, maybe 5-6k.
There are many brands of oil that are good including valvoline. try to find one with the gf-6a badge on it and that certifies it meets certain standards, the newest ones as of now i think.
Thank you.. Yeah, I never think I could go over 6K miles on any type of oil change. I probably won't need a Mobil 1 filter after the "FS" does its cleaning. I thought about using one of those engine cleaner additives right before an oil change that Scotty Kilmer promotes..
You don't have to use a mobil 1 filter, but you do want to get one that is designed for synthetic oil, longer drain intervals. The oil will still get dirty, and the oil is holding the gunk in suspension, that is a good thing, but you want a good oil filter that will help remove it from the oil. One thing I don't get too cheap on is a filter. A good one is only about $10 like the mobil 1, and deals can be found.
cost is a pretty poor indicator of oil filter quality
Use the oil as required in your owner's manual.
use whatever viscosity the manufacturer says and get it in full synthetic. Also I recommend either OEM or the wix oil filters.
