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Recommended Engine Oil For 1999 A6 2.8 With 90k

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Old 04-24-2006, 09:34 AM
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Default Recommended Engine Oil For 1999 A6 2.8 With 90k

I'm Using Synthetic Mobil 1 5w-50 but I think it's making my car mildly overheat, too thin for the mileage that my car has I guess. What do you guys think?
Old 04-24-2006, 09:37 AM
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Default This will start a holy war

Mobil 1, 5w-30
Old 04-24-2006, 09:37 AM
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mobil 1 0w-40
Old 04-24-2006, 09:39 AM
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ps if your car is overheating, check out your cooling system. you might need a good flush.
Old 04-24-2006, 09:46 AM
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5w-30, 10w-30. I wouldn't bother with a synthetic on an NA engine.
Old 04-24-2006, 09:50 AM
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Default It will tell you in your owner's manual....

I just did my saturday with Castrol 5w-40 (fully synthetic)

That's what the manual recommended and if 5w-40 was not available to use 5w-30.

The owner's manual said it came stock with 5w-40.
Old 04-24-2006, 09:51 AM
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Why do you think the car is overheating?
Old 04-24-2006, 10:44 AM
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Default Seriously doubt your oil is causing an overheat situation

Look into your cooling system first, you're barking up the wrong tree looking at the grade of oil.
Old 04-24-2006, 11:16 AM
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5W-30, Castrol Syntec 0W-30
Old 04-24-2006, 11:39 AM
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My '99 2.8 likes the M1 15-50, 71k. It's kinda hot here in SoCal.


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