Question about 2001 Cadillac DeVille

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I have an 01 deville should I use 5w30 which is recommended or go to 10w30 it has 98000 mi on it

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According with the Repair Guide you coudl use...
Use in all temperature ranges
- Peak Performance 5W-30 Conventional Motor Oil
- AutoZone(R) 5W-30 Motor Oil 55 Gallon
- Valvoline SynPower Full Synthetic 5W-30 Motor Oil
- Havoline with Deposit Shield 5W-30 Motor Oil

Check if you have excessive oil consumption, but if this happens, you should use 10W-30.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Posted on Feb 13, 2012

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Posted on Jan 02, 2017

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SOURCE: changing engine oil types from 10w30 to 5w30

If anything i would bump it up to a 10w40 with that kind of milage engine is prety loose, just stick with the same brand of oil just go heaver, i'am not a big fan of 5w30 to me its like pouring water in the crankcase.

Posted on Feb 21, 2009

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