Great results for my diesel no Improvement V8
My old Ford 4100 tractor runs like new and more power than before.
used it on my trans am that sits for more than 6 months. Retired starts and ran ok .using it to keep injectors clean . hard to tell , it always ran good . Don't see any difference.
I’ve been using it for years. Always dose what it says it will do. I wouldn’t use anything else.
my husband has used this treatment for about 4 years, it has kept our vehicles operating in top shape, even the older vehicles