Completely engine and use case dependent. Biggest differences I’ve personally seen and experienced between oil brands is engine/piston cleanliness.
People with high mileage vehicles who run supertech full synthetic oil
- Thread starter danjak26
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Project farm tested the ST High mileage version and found it did swell the seals somewhat, no oil it going to do very much but it did help. I don't care for trying to cure leaks, if it leaks I'll replace the seal, I use the HM oil to help prevent them.
My buick calls for 10W-30 which does not get dexos certified at all, nor does it call for dexos oil.
I doubt the 3800 V6 in my buick is very hard on oil at all, pushrod engine with no sort of VVTI or anything.
Realistically, if you change your oil regularly it will keep your engine good and clean. That's more of a problem getting into longer oil change intervals.
Unfortunately that’s not true. There was a time when I believed that also.
To each their own
Hmm that is not my experience. For the most part, most modern motors from reputable brands I have owned - Chevrolet, Toyota, Subaru, Honda, Dodge, Ford, BMW, Mercedes - will make it to 250k. It’s everything else that goes. 1GRs for a Toyota are certainly durable motors but there are other similar durable motors from other brands as well.
We have a 2017 4Runner my soon uses. Great truck. The 4th gen we had before it was good too, right up until around 275k when it wouldn’t pass inspection due to frame rust.
They all wear out. Father Time comes for everyone and everything.
Have a good day.
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Which do you prefer? 5k dealer oci’s(90k) vs ESP 5k oci’s(130k). Both Honda/Acura 3.5L known for varnish on front head. VCM enabled on both.
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I like #2. That’s what my cars typically look like. I buy Mobil One in the needed viscosity from Walmart because it is convenient. Nothing fancy. Can’t imagine the Quaker State, Penzoil, Castrol, Valvoline full synthetics would look that different but I stick with M1 out of routine now.
Your Buick will be fine with any oil changed at 5k miles, or every 12 months. It was designed for conventional oil, and even with that, outlasted the body of the car. I have a 2000 lesabre with 140,000 miles, and have been using 5w-30 when I lived in Colorado, and 10W-30 now I live in the deep south. Supertech or Kirkland full synthetic would be a great oil for it.
Interesting, what would that change?
My point was that if Kirkland was good enough for a recommendation then this oil would qualify as well.
Probably nothing but less moving parts to fail lol.
Are these two the same engine? What cars is this?
No it's not. It'll take a little longer at best with regular changes, but the piston ring area is getting dirty from the very first start. What you need is an oil that doesn't do that, or that removes it. Obviously some engine designs are more prone than others, but oil choice and use case also matter.
Honda 3.5L. Here’s two Subaru’s I maintain on different oil brands. Also 5k oci’s 140k and 150k.
i talked with a person the other day with a bmw e36 with more than 200.000miles.just castrol 5-30 he said..he didnt even know which castrol is ..
Quaker State posted a video taking apart an engine from a crown vic taxi cab that ran quaker state advanced durability conventional motor oil in NYC for 500,000 miles, 3000 mile OCI. The area around piston rings had no excessive carbon build up and I doubt any full syn is gonna be as dirty as a conventional oil.
Half a Million Miles - This is the link to the video take a look for yourself.
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