upgrading to synthetic?
Just make sure you let all the old oil drain out.
I switched over to Castrol SLX 4718 full synthetic (got it from a Chevy dealer) a couple oil changes ago. I noticed the engine runs smoother than regular oil.
I switched over to Castrol SLX 4718 full synthetic (got it from a Chevy dealer) a couple oil changes ago. I noticed the engine runs smoother than regular oil.
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