E55BKS

Has anyone here tried Zmax engine treatment in there cars?

Any issues with mixing it with synthetic oil?

liquiddi

snake oil

Jen_Kenne

I found more than four threads about Zmax. The claims seem interesting - but if a product were worthwhile, F1 (and lesser series) would use it. Racing oils are special - Shell sometimes mixes a special cocktail for a specific race, and I doubt the Silver Arrows use the same Mobil-1 we can buy down at Advance.

Techron? Any users, supporters, detractors?

Chargin55

Shell change the fuel blend for each race depending on temps. race duration etc. etc. I did not know this until I received their newsletter last week with a link to this site. FYI

http://www.shell.com/home/content/mo...nd_calculator/

hooleyboy

Carrol Shelby uses it in every car. That being said, I have a gear head buddy with a autographed Shelby car. He loves Carrol Shelby, He also thinks Zmax is snake oil.

The only drop in engine additive i seen work is Seafoam.

Seafoam reminds me of Stoli Vodka... Bland looking bottle, but good stuff inside.

nitrous_nate

This should be all you need to read:

http://www.ftc.gov/opa/2001/02/zmax1.shtm

slownrusty

Z = pwned

Seafoam well respected and proven.

Jen_Kenne

Thanks for the confirmation. This should be a sticky.