This car uses fullsyn oil, used Kirkland - after about 5.5k I checked, oil is Goldish but darkish when its concentrated. There was a smell on the oil. So changed it with Valvoline High Mileage. I seems to note smoother engine movement on a 2mile ride home.
Some where I saw this Lucas product. Wondering if I should use this for the next oil change?
I was thinking in the line of @jtsanders in another thread where he stated “This led them to extend the change intervals for all vehicles. The only one I remember is the Cavaliers in the fleet. They ended up at 10,000 miles for the change interval instead of the recommended 7500 miles.” Sparks, Carbon......100k! - #67 by Purebred
But the smell in the oil - I have no clue what it was. One said oil burning another said fuel seeping through without fully burning. So went and changed it with High Mileage. Engine has no oil leak. Its VVT engine. Toyo recommends 6months or 5k mile interval. My Volt reminds me about 24months to change the FSyn oil. I am sure these ICE can do 1yr 7.5k or 10k.
(Certain) Oil additives can only sometimes help limp along an old engine near the end of it’s life (depending on the issue) that isn’t worth fixing. Other than that, just follow manufacturer recommendations.
Using full synthetic means that you don’t have to worry about additives. No, don’t use it. Many brands of oil will smell bad all the time when the engine is drained…
Prolonging engine by ensuring that I am using the right oil. I feel that with high mileage oil, engine is more smoother. Need to drive more to validate.
Smell: But the smell in the oil - I have no clue what it was. One said oil burning another said fuel seeping through without fully burning
Any brand whose specs/viscosity match the oil type listed in vehicle mfr’s manual.
Six months–or 5k miles–whichever comes first!
I know somebody who drove less than 5k miles in 4 years, and he really screwed-up his engine because he insisted (over my protests) that the odometer mileage was more important than the elapsed time factor.
Use the correct grade. Synthetic or regular, any brand, all are good, high mileage if it makes you happy. Every 5K or 6 months for regular, 5K or every year for synthetic.
My Avalanche V8 has 155K miles. I use synthetic… not high mile… and change yearly at about 3500 miles.
I take this as the solution.
The only reason I went for High Mileage is comments I heard from people about smell - gas leaking into oil…
But I feel good about going for High Mileage based on short observation.
As u said, for my 3rd gen Integra, I never switched to high mileage even at 1170k.
The only real difference with “High Mileage” oil is that it contains special seal conditioners to slow-down leaks from old dried-out seals. If you don’t have any leaks, there is no advantage to that oil.
No disrespect to you, @Tester but that article link reads like it was created by AI.
It isn’t so much wrong as it seems to include an awful lot of the sales literature used to promote high mileage oil. The wording is awkward much like I’ve seen from AI.
These actually degrade the polymer seals. They cause the seals to swell, and that is the first part in dissolving the polymer. A high mileage engine might not last long enough for this to matter. One of my assignments when working was to evaluate chemical compatibility with the polymers we used. Swelling was one of the test measures.
