What is the best spark plugs for 1999 HP500 Carb
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IME, a marketing gimmick. Caused a stall at low temps (below 50F!) in the Dodge tow vehicle. Put in fresh Vpowers, stalling occurred. Changed back to old Champions, no stalling. Reinstall Vpower, stalled.
So, I don't run them in anything now, went back to the AC/Delco or Champions. YMMV of course.
So, I don't run them in anything now, went back to the AC/Delco or Champions. YMMV of course.
Last edited by apollard; 08-22-2010 at 07:53 PM.