darrenc
Thread starter
Dragboat. Did I say Otis? I meant Cooter!
I wasn't sure if it would really work as advertized so I bought some to try out. I put it into my 92 toyota 4x4 pickup with the 22RE engine. I had been running the pickup with Chevron 87 octane unleaded for the past 7 years and so I thought it wouldn't make much of a difference. When I first purchased the truck I advanced the timing 2 degree's and the truck still ran well on 87 octane. For the last 5 years I have noticed a ping (detonation) with 87 octane gasoline. I tried 89 octane but it still detonated. On 90+ octane I had no problems. I was thinking of retarding the timing back to factory specs to get rid of the pinging but kept putting it off. I added the PI to the tank last November and have run through several tanks of maintenance levels in since. After the first tankfull with about 9 ounces for 17 gallon I noticed that the pinging went away. I have not noticed any pinging since on 87 octane Chevron. My guess is the PI removed a large ammount of carbon buildup from the heads/piston top and brought the compression ration back down to stock levels.quote:
Originally posted by darrenc:
Does anybody really know what is in Amsoil PI and why it is so pricy (by fluid oz. not treat rate). Their MSDS shows that it mainly medium Naphtha. Is there something special about this stuff? I’ve been using it for about a year now. I have no idea if it really works as advertised. Is anyone informed about this. Molekule…Terry…
You know I really don't know what is in it, but I do have an account in El Paso that uses it exclusively for cleaning up cars that don't pass emmissions.quote:
Originally posted by darrenc:
Does anybody really know what is in Amsoil PI and why it is so pricy (by fluid oz. not treat rate). I have no idea if it really works as advertised.