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Kia fuel additive

18K views 8 replies 7 participants last post by  grapeknutz 
#1 ·
Is anyone using the recommended Kia fuel additive?
 
#9 ·
Well I am pretty much "old school" on fuel additives, I use Marvel mystery oil in all my cars, and yet to have any injector problems. Marvel mystery oils is not a solvent, rather a detergent oil.
When I was turning wrenches for as living, I even used it on my air tools to keep them clean, bottom line its good stuff.
 
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