A4 running hotter after oil change?

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05-20-2005, 12:35 PM

DPH

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A4 running hotter after oil change?

A fellow A4 driving buddy of mine just had the oil changed on his 98 A4 2.8 w/125k on it, and now the oil temp seems to be running a little hotter than before. Engine temp unchanged.

Is this possible? Any reasonable explanation? The mechanic doesn't know why this might be happening.

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05-20-2005, 12:40 PM

~~ModifiedA4~~

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is the oil overfilled? or too heavy a weight?

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05-20-2005, 02:36 PM

ex-quattro PETE

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thicker oil or mineral oil might raise the temps a bit.

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05-20-2005, 04:17 PM

SilveRazeR

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when I went from 10x30 to 5w40 syntec my oil temp went up too

guess its normal...

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05-20-2005, 07:09 PM

Audi Junkie

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Outside temps higher or using an oil that's not friction-modified.

For instance, the above-stated 30 to 40 switch is much thicker. Most 30s are on the thin side and shear to a 20 weight. Fresh 40 weight is quite thick and might not contain the same FM additives. Anyway, in the V6, oil temp is no problem. Just pick a 40 weight that has appropriate winter-rating and use it for proper intervals. I like 15w-40 for summer and 5w-40 for winter. Anything thinner is asking for engine wear and consumption/deposit problems. Mobil 1 0w-40 is a good catch-all oil but I like the Mobil 1 5w-40 T&S best.