I am out of date with Castrol synthetics. Earlier today I went to CT looking for GC 0w-30, while they had those in liter sizes they didn't have them in 5L jugs. So I ended up picking up 4 jugs of Castrol Syntec 0w-40 European formula, this is the made in Belgium stuff. LL01 approved.
Background:
2007 BMW 335i N54 - IC, intake, downpipe, cat delete, exhaust, tune. Serviced at BMW dealer with 5w30 until 70k km. Been changed with GC 0w30 at a indy shop every 7-9k km intervals. 115k km on the odometer. My wife drives this car, about 10-15k km a year. 70 highway/30 city mixed driving, mostly long trips.
2007 BMW 550i N62 - Intake, exhaust, tune. Same oil routine as above except oci is 12k - 14k km. 160k km on the odometer. I drive this car, about 10-15k km a year. 70 city/30 highway mostly short trips (
I usually have both these cars serviced at a reputable indy shop in town. The owner is former longtime head mechanic at a local BMW dealer. Both car's routine maintenance is up to date. 335i is currently parked for the winter, 550i has winter tires on but is rarely driven. I am in the process of moving to northern AB and am planning to do the oil changes myself for the future.
The current fill in both cars are about 9 months/6k km old. Anyone have experience with the 'GC' 0w-40 in these motors? Should I go back and pick the individual 1L jugs of GC 0w30? Another option would be Mobil 1 0w-40 Euro from wally world, it's on sale still. Can anyone recommend good filters that I can order online?
Any input would be greatly appreciated.
Background:
2007 BMW 335i N54 - IC, intake, downpipe, cat delete, exhaust, tune. Serviced at BMW dealer with 5w30 until 70k km. Been changed with GC 0w30 at a indy shop every 7-9k km intervals. 115k km on the odometer. My wife drives this car, about 10-15k km a year. 70 highway/30 city mixed driving, mostly long trips.
2007 BMW 550i N62 - Intake, exhaust, tune. Same oil routine as above except oci is 12k - 14k km. 160k km on the odometer. I drive this car, about 10-15k km a year. 70 city/30 highway mostly short trips (
I usually have both these cars serviced at a reputable indy shop in town. The owner is former longtime head mechanic at a local BMW dealer. Both car's routine maintenance is up to date. 335i is currently parked for the winter, 550i has winter tires on but is rarely driven. I am in the process of moving to northern AB and am planning to do the oil changes myself for the future.
The current fill in both cars are about 9 months/6k km old. Anyone have experience with the 'GC' 0w-40 in these motors? Should I go back and pick the individual 1L jugs of GC 0w30? Another option would be Mobil 1 0w-40 Euro from wally world, it's on sale still. Can anyone recommend good filters that I can order online?
Any input would be greatly appreciated.