Alright, I believe I've made a killer deal.
There is currently a $20 rebate for purchasing 3 gallons of Rotella T6.
http://www-static.shell.com/static/rote ... iy_mir.pdf I read the rebate and it does not specify that the 3 gallons must be purchased at the same time. If this is true you could do this.
Have AAP pricematch walmart to bring T6 to $19.50.
Find $5.50 filler to bring total to $25.
Use $10 coupon.
This brings total to $15.
Repeat two times for a total of $45.
File rebate for $20.
If accepted you just got 3 gallons of Rotella T6 and your fillers for $25!
Even if your fillers are worthless that's $8.33 per gallon!