[heckler]

see post 130 and 137 for background.

Third tank 327 miles on 19 gallons.
17.2 mpg.

still 1-2 mpg increase. Worth the cost of the acetone
but a little dissapointing.

This time I put in 4 oz. per 19 gallons.
I've read that some people are getting best
results with 2oz. per 10 gal.

[rface]

I talked with a guy who runs a HD PickUp a week or so ago, and he was telling me that he gets 14 mpg if he pulls his trailer or if he doesn't. (We never talked about acetone etc...) It made me think that some of these trucks were made for pulling, and maybe the way the gear ratios are .... well, there isn't a lot of thought about fuel economy versus towing ability. Perhaps there isn't going to be much of an improvement in these heavy duty towing machines? This is just a thought.

Also - a passive observation I may have seen is that the little engines that are already very fuel efficient seem to get there better improvement at lower acetone mixtures....like 2 oz. per 10 gal, while the bigger engines like a heavier dose. I don't know if this is exactly true, but I thought I'd pass this on to you for whatever its worth.

Thanks for posting your results here.

[heckler]

See posts 130 137 142.
4 oz per 19 gallons only got me 16.9 mpg.
Next time I'll go with 8 per 20 to see if it does better.

But since the price of gas has gotten so high I've gotten the wifes 94 Firebird out of moth balls(the barn). It's been sitting for 2 years and has a few mouse tooth induced electrical snafu's to fix.

3.4L V-6. 155,000 miles. 5-speed.
used to get 24-25 mpg. We'll see what she does with the recommended 6 0z per ten gallons.
Stay tuned.