OK, I've decided on this product for now after reading many threads. And, Wally World has it here for $1.50 a bottle for 32oz. The bottle says good for up to 100 gallons of fuel and to dump the WHOLE bottle in the tank. It doesn't give any mixing instructions for other quantities. Since my tank is only 26 gallons, shouldn't I only use 1/4 of the bottle at a time?http://dieselplace.com/forum/smileys/Confused.gif

I would, The stuff I use (promise 409) is in A 12 oz bottle and it is supposed to treat 100 gallons.


If my tank is real low I use A quater of the bottle witch is 3 oz's,


I usually fill up at half A tank and use 1.5 oz's.


Hope This Helps.Edited by: John R

OK, I'm moving to Jersey. The Rotella goes for $5.00 to $6.00 up here! It would almost b cheaper to have you buy it and ship it up.

Probably different size bottles.....I've seen two sizes at WalMart.


It treats 100 gallons....I've always dumped about 1/4 in at a time.

Here in NC I pay 4.88 plus the uncles' part. Unionville to be exact. But seriously I like this additive. Wayne