[Perfectlap]

^ You should see what the exchange policy is. Maybe you can swap your 5-40 for the 10-40 when they refill stock. Those 10-40 and 5-40 Castrol Edge bottle always seem to be in short supply. I guess the Porsche/BMW DIY types run down the stock. I still have 2 or 3 Puralotor filters left from when they gave you one free with 5 quarts. Looks like a rebranded MAHLE (says made in Germany).

I stopped by Wal-Mart. They never ever have 40 weight anything. Mobil1 or Castrol. And getting any customer service there seems as enjoyable as a kick in the nuts. I don't think I've ever seen the 5 quart jugs in 40 weight either, certainly not discounted. The other weights were $8 and change.

I'm going to try and put in another order for 5 quarts in a separate order since 15 quarts was the limit for the first order. I'm pretty sure this stuff is going to hit $10 soon. I wonder how much the dealer is over-charging now.

EDIT.

Decided to go for 30 quarts.
FYI, Puraltor oil filter # Part No: L25316 ($23 before discount)
Puralator air filder # Part No: A35437 ($26 before discount)
both look identical to the MAHLE filters.