Have you done this yourself?
B
Yup...
On my stock 94 tbi I've been using it for 6 months...
350,*** on original engine...350 TBI...
Mileage went from 14 w/o it to 16-17 with it...no other changes...
My oil consumption dropped...likely due to how it affects piston rings...
My idle, which had been choppy for years is smooth & stable now...
I mix @ a 400:1 ratio...1 oz per 4 gallons (128oz/gallon). 500:1 is ok too...no thinner & no richer.
Started on the Tahoe when i got it. Mileage was @ 13 after 2 tanks...now is at 15.5-16.
No real other response on the Tahoe yet...still haven't driven it much.
After a few tanks of running the oil you'll stop seeing "improvements" since the big cleaning has already been done. With continuous use it will keep things cleaner longer...especially the plugs.
Ethanol in our fuels over time does gum things up...using this stuff reduces buildup. It's way cheaper and has a better blend of ingredients that anything off the shelf @ your local auto parts place.
I'm not trying to be a sales guy but I used to have to change the plugs on my 94 every 25k...they developed too much buildup on the electrodes. I pulled the plugs around a month ago (hit my 25k interval) and they had practically no buildup at all...I didn't bother changing them.
The stuff works...makes sense too when you know what's in it and how 2 stroke fuels burn.
Cameron