Adam Badzioch uses Lucas Oil Stabilizer and Lucas Fuel Treatment in 2002 GMC Yukon XL 2500
Your stabilizer and Gas treatment fixed the GMC knock in my engine block the first time I used it!!! I own a 2002 GMC Yukon XL 2500 series and with the really short pistons it is a characteristic of this engine to knock at cold start up and a couple minutes after till thing warm up.
...BUT not with Lucas Oil on the job. IT IS ALL BUT ELIMINATED MAYBE FOR A TENTH OF A SECOND till oil pressure build up....
thanks LUCAS oil!!!!Follow @Lucas_Oil