Originally Posted By: 2James1
I used a bottle of Redline Sl-1 not too long ago. With no noticeable difference. I don't know if that is good or bad. I know it is a good product.
It's the same stuff, so if there was no difference, it's likely your system does not need a clean.
Short trips and non top tier fuel would be the reason to use such products.
Check your throttle body. If it's not gummed up, then it's likely you don't need a PEA cleaner.