Originally Posted by bismic

Thanks for catching my error - your calcs are correct, then add shipping.

I had a typo in my gallons to ounces conversion program.

Starting over (start w/ $$'s):
I purchased one case (6) 1/2 gallon containers for $125.02 - delivered.

Corrected Calcs:
3 gallons is 384 ounces or apprx. 48 treatments (30 gallon fill).
(I am actually over treating by apprx. 4% at this rate since 64 oz (1/2 gal) treats 250 gallons).
This is $2.61 per fill OR 8.7 cents per gallon.
This is $104.40 per year

If I measured exactly, I could drop about 4% in the cost and if I ordered 2 cases (and they taped them together for shipping), I could knock off another 5-6%). Theoretically the cost could come down to about $2.35 or so per fill up.

I can't recall Beachbumcooks exact prices, but the most recent check I did was $10 per 80 ounces. This treats 250 gallons. Double dosing it, will treat 125 gallons. (normal treatment would be 9.6 oz for 30 gal and double dosing would be 19.2 oz per 30 gal). That is $2.40 per fill.

If I got my math correct this time, Stanadyne is around the same cost as double dosing the Power Service - maybe a little less. To be totally fair, I did not try to source the Power Service in bulk (multiple 80 oz containers). It is probably a little cheaper by doing it that way. Bottom line - I still feel the cost is reasonable.

I also add 0.5 gallons of Bio for extra lubricity. I usually get it for close to current diesel prices. I probably a lose little in mpg w/ it due to lower BTU value (but this was just a post on Stanadyne).

Sorry for the errors. (note to self - quit doing math at 6 AM).

Jakebrake - I really appreciate your post.