PSA: I used to think those 'diesel fuel additive' bottles were just a waste of money

I was working on a 2015 Duramax that kept having injector issues, and the owner mentioned he'd never used an additive in the 80,000 miles he'd owned it. An old timer at the parts counter overheard and said, 'Modern ultra-low sulfur fuel has no lubricity, kid. It's like running metal on metal.' I started adding a shot of Hot Shot's Secret to my own truck's fill-ups. The difference in how smooth it runs, especially when cold, is noticeable. Anyone have a favorite brand for keeping those high-pressure pumps happy?

2 comments

2 Comments

seth_green854d ago

Switched to Archoil AR6200 a few years back after my CP4 started making that awful whining noise. That stuff is like a miracle worker for pump noise. The injector balance rates on my scan tool look way better now too. I just use it every other tank to keep costs down.

wrenstone4d ago

Ever notice how the right additive can fix a problem we just learned to live with? Good to hear it worked for your pump, @seth_green85.