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Forum: General Boating Discussion

07-03-2003, 09:02 AM

Replies: 22

Ever hear of "GM upper end cleaner" ?

Views: 3,039

Posted By HiPerf2000

Not sure if it works for this or not??? I was...

Not sure if it works for this or not??? I was also hoping to find out because mine 6.0 knocks for about 20 secs. When first started. I've reseached it, and found that Chevy says it's normal ...

Forum: General Boating Discussion

07-02-2003, 10:41 AM

Replies: 22

Ever hear of "GM upper end cleaner" ?

Views: 3,039

Posted By HiPerf2000

are you trying to get rid fo the "cold start...

are you trying to get rid fo the "cold start knock" in a 6.0 ltr. motor????

I've heard chevy recommend this before.

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