For people in Canada, I thought I'd point out that Mobil 1 oil is on sale right now at Canadian Tire for C$28.79 for five liters. The sale item consists of a 4L jug bundled together with a 1L bottle (wrapped in clear plastic). At the store I went to, it wasn't located with the other oil, so you may have to look around.
Normally it's $33 for 4 liters. So, on sale it works out to $5.75 a liter instead of $8.25. Super savings!
