In Canada Mobil 1 comes in 4.4 litre jugs. The 02 WRX engine oil capacity is 4.5 litres.
I always supply 2 jugs to my Dealer Service Dept but they put in 1 jug and leave it at that - down 0.1 litre from full. I bought a 1 litre size and topped up myself. What do you guys do, just leave it or also top up?? BTW I find the dip stick in this car difficult to read. It looked to be just over the ADD level indicator before I added some, but hard to tell. Doesn't give me confidence in the true level and I don't want to add too much either. I put in about 1/3 litre and gave it some time to drip down but still didn't read full.