Another run of M1 AP 0w20 in the Gen 1 Penatastar. I took the OLM down to about 2% on this one, changing at exactly 8k miles on the oil. I added a little less than 1/4 quart in February. This was the first OCI with a Mobil 1 oil filter. Other than the factory fill, each oil filter has been a Fram Ultra. The M1 filter came out with more twist than any previous filter, but it appears to have held together just fine, with no apparent weak spots. I've got 12 more M1 filters I picked up on clearance at Wallyworld awhile back for 4 bucks each. I attribute the slightly higher insolubles to the long run rather than a less efficient filter. I'm planning on going 5k on this and subsequent OCI's, but there's always a chance I'll go the full OLM distance. We'll see. I filled it with Shell Rotella Gas Truck 0w20 that Shell paid me 10 bucks to use. ($10 clearance, + $10 AZ Rewards, +$10 rebate).