What raceing oil weight is best for chevy truck avalanche 1500 5.3L 2 wd 2004

Asked by Feb 03, 2015 at 08:24 PM about the 2004 Chevrolet Avalanche

Question type: Car Customization

6 Answers

1,515

Depends on the engine & climate you live & drive in. Moderate- temps with no cold is 30wt. Hot- temps 40wt like I used in a TBI 350 " in AZ. (Pennzoil racing) Mixed- hot,warm,cold, a multi weight like 10-30wt. Mobile 1, or Castrol full synthetic on newer cars & trucks like yours. Multi weight oil (10-30wt) the 10 thinner weight side is for easier start ups during cold weather. A high milage / older engine oil fills in the groves or deep scratches so to speak & makes the worn fiction components slippery.

44,325

You do NOT need racing oil for a 5.3 Chevy motor. Run what the manufacturer specifies. If you want some extra protection, run synthetic such as Mobil1 at the manufacturer specified grade (pretty sure it is 5w30).

5 w 30 in my 04 Avalanche. Al

Have 08 Avl and 150k miles running 15/50wt Mobil One and works great

1,515

Royal Purple auto trans fluid & rear dif gear oil helps too.

5w30 full synthetic is what I run

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