Quote:
Originally posted by georgeseq
Regarding usage rate. Initially I put in one 12 ounce bottle then filled the tank. Now I am using approximately 3 ounces per tank, as per Primrose's recommendation.
That is one point that was impressive/surprising for me in that I had been using Chevron Techron fairly regularly in my Sequoia and *thought* that my injection system should be clean.. It wasn't....
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I assume you are referring to the throttle body part of the injection system not being clean. I haven't cleaned mine yet, but from the looks of things, it's the crankcase ventilation system that is causing the gunk to build up around the throttle body (oil vapor from the crankcase breather hose enters the intake tube between the MAF sensor and throttle body). No amount of injector cleaner in your tank is going to have any effect on this. That will likely just require periodic removal of the intake tube and manual cleaning of the throttle body and butterfly with a good solvent. I typically use Berryman's B12 Chemtool Carb and Choke spray cleaner for this type of cleaning chore - it works really good at dissolving varnish and such on motorcycle and other small engine carburetors. And it is relatively inexpensive at Wal-Mart.