Dexos oil - general observation

tom3

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I usually change oil at around 4k miles, ran it out to about 6,000 this time in a year's running, probably 80% highway use. Had noticed a drop in oil pressure just lately. Usually stays right on 40 psi on the highway and dropped maybe 3 lb. The oil minder was showing 34% range remaining. Got the oil changed at the dealer today with their Dexos 1 full synthetic (as listed) and on the 35 mile drive home, 85 degrees outside, the pressure was again right on the mark at 40 psi. . Probably won't go that distance again. Engine was running fine, no noise at all, oil right on the full mark before change.

So, I'd say 6000 miles might be too long between changes.
 

swathdiver

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Have noticed the same thing too. The engine runs so much better with fresh oil, I ought to go back to 4K OCIs instead of 5K. It always takes a few hundred miles to get it done afterwards.
 

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