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Can I go from dinosaur to synthetic oil?

1K views 4 replies 5 participants last post by  touringcamry 
#1 ·
I have an 02 2.4 IL4 2AZ-FE.
I did the Kreen flush a month ago.
It got better and now the miss firing is worse.
It always used dinosaur oil.
Can I go straight to synthetic oil on next Kreen flush?
 
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