Originally Posted by Virtus_Probi
The only PEA fuel injector cleaners that I regularly see at reasonable prices when not on sale are Gumout Regane and Gumout High Mileage Regane at WM, just under $5 for (as mentioned) a fairly small bottle. SDS sheets for both say 10-30% PEA.
Techron Complete used to say on the label that it contained PEA, but that language was gone the last time I looked and the SDS for it shows a couple of trade secret ingredients but nothing that is explicitly PEA. I'm not sure if Chevron developed something that they think is better than PEA that they are calling out as a trade secret or what, but I have been buying Gumout Regane the few times a year I want to run a cleaner in one of our cars.
Yes, I'm not sure why Chevron doesn't make that a prominent part of their selling their product since they developed PEA back in the early 80s!
I've checked patents for gasoline detergents and don't see anything recent that would equate to PEA, the only thing I can think of is that since they legally don't have to
list the ingredient since it is a proprietary chemical they don't have to tell you the percentage of it. Still puzzled since Chevron is a pretty trustworthy company in general but this makes me wary of Techron in bottles now. I'll go with the competitors that advertise the PEA and amount on the product itself.