10w30 for high mileage?
#1
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10w30 for high mileage?
ya i have a 01 silvy ext cab with 80 thousand miles on it, i use mobile 1 5w30 oil in it and a buddy of mine suggested using 10w30 since it is thicker because he said when an engine has that many miles it needs a thicker oil, is this true? thx
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I switched to 10w-30 and it solved oil consuption issues after the cam swap. The manual says 10w-30 is ok too. FWIW the closer the two numbers are the more resistant to breakdown the oil is.
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dude- take it from me- first hand. a TON of time, money and knowlege is poured into telling you which grade of oil to run. Unless your buddy is comfortable saying that he knows better than the GM engineers, their tests, test proceedures and results- use common sense and stick with what they say.
If it aint broke, dont **** it.
If it aint broke, dont **** it.
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I'd stick with the 5w-30. I was using Valvoline all-climate and switched to Valvoline Max-Life when I had 80k miles. I have 135k now and no problems. Your using Mobil 1 which is way better anyways.
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