The kind of "premium oil" matters more than the kind of engine; a lot of places will try to pass off a synthetic blend as "premium oil", but the problem is it's still partly natural oil and it contains all of the unwanted chemicals that go along with it. If you're going to use "premium oil", make sure it's a Group 4 full-synthetic oil, because that stuff is manufactured from natural gas (which is renewable!) and it contains no contaminants whatsoever. If the engine runs hot and/or if the engine has a supercharger or turbocharger that shares the engine's oil supply, then the answer is definitely "yes, you must use good full-synthetic oil, no synthetic blends or any of that BS". Otherwise, it's more a matter of preference, but I'd still use a Group 4 synthetic (like AMSoil) in any engine, because in a low-stress engine you can run that stuff for 10,000 miles (they claim up to 25,000 miles in some engines) before you have to change it again.
Don't listen to deusexaethera. The guy doesn't even understand how to back up from an 18 wheeler so he can see around the water mist off its tires when its raining.
if it has that many miles just stick with what you have been doing. 3 months 3k mile oil changes I assume.
I changed the oil about every 10,000 miles on my old LeSabre and it went 310,000 miles before I sold it this past summer.
Hmm, that's different. Clearly your engine is happy with whatever you've been giving it, so there's no point changing now.
Yeah. Yesterday, I decided to just stick with changes about every 3k miles or so. It is cheap enough not to risk it, although a place in Vegas tried to tell me that I needed $300 worth of work or my car would break down immediately .
Not worth it for most cars. I only use a "premium" (Mobile 1 fully synthetic) in my Chevelle because it sits for long periods and is only changed once a year, where conventional would go bad. I sold my truck with a 350 last year with 225k miles on the clock and only regular oil through it, changing it twice a year (~6000 miles) and it still ran like a Swiss watch.
I run full synthetic, a high quality oil filter, and change it every 7-10k. Am I noting any benefit? I have no idea. Better safe than sorry. Plus, with dino oil I see it turning black wayyy sooner than with synthetic. Hence, not changing it as often.
this totally depends on the car you drive. driving a carbureted SBC over 3000 miles without getting an oil change is a death wish for it. next thing, is yes, the newer engines do run a lot cleaner, and may get away going for higher mileage before each change, but the oil still gets dirty, which introduces more dirt into the engine, yes, the oil will still be able to work 100% but there is still more dirt getting into the oil/engine. and im talking about conventional oil, not synthetic or anything