answersLogoWhite

0


Best Answer

You can use Synthetic oil at any time. You can even mix it with regular oil. Just be sure and use the correct weight.

User Avatar

Wiki User

16y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Will it hurt your engine to put synthetic in a 2004 trailblazer if it didn't have it before?
Write your answer...
Submit
Still have questions?
magnify glass
imp