fuel additives and octane ?

[Wild one]

Thanks for that extra info.
With something like this, something typically purchased in relatively small quantities, cost is not much of a concern for me.

Once the better product can be determined, that is what I am most likely to purchase.

Redline also seems to be hard to find in the U.S. as well. Online or nothing.

That's the biggest reason i went with the CRC product,it's easy to get in Canada. I haven't ran a boroscope in the cylinders since i tried it,so i can't comment on whether it's cleaning up the piston tops or not.

 

[06 Dodge]

I've ran 2 bottles of this through my 300,and it seems to be a pretty decent product.It's easy to get in Canada,as Canadian Tire carries it,was the biggest reason i tried it.Whether it's as good as Redlines cleaner i don't know,as i've never tried Redlines fuel system cleaner,as it's a bit harder to find up here.

CRC 1-Tank Power Renew gasoline, 443ml

A concentrated one-tank cleanup that delivers a powerful SHOCK to your dirty fuel system. Made with the maximum available chemistry it's the most powerful fuel system cleaner on the market. Excellent cleanup with proven results. Up to 5.7% MPG increase, 97% total power restoration, 99% injector...

www.crcindustries.ca

I was when I looked at the SDS to see that it contains Diesel Fuel No 2, 15-40 %