Posted here before, but here's a retroactive introduction:
1. What kind of vehicle you have
blue '04 WRX at 230,000 km. Running remarkably well, but considering a stock engine rebuild in due course anyway.
2. What your owner's manual says -- not just viscosity, but certifications (look for acronyms like API SM, ILSAC GF-4, etc.) and change intervals as well
ILSAC GF-3 (API starburst) OR API class SL "Energy Conserving", OR API class SL "Energy Conserving" as a backup option
5W-30 preferred, 10W-30/10W-40 acceptable above 0 degrees F.
For severe driving conditions, API SL (or SJ) SAE No.: 30, 40, 10W-50, 20W-40, 20W-50.
Synthetic oil of the same requirements allowed.
OCI: 6,000km
3. Where you live
Toronto, Ontario, Canada - the great white north. Chicago weather.
4. How you drive (easy? hard? fast? slow?)
Moderate on the street, and push the WRX hard at the track in Time Attack, Autoslalom and Lapping Days. Track sessions rarely exceed 1/2 hour in duration.
5. What your daily drive is like (short trips? long trips? city? highway?)
Long trips 150 km north to Orillia and back, mid-week and weekends, but I walk to work.
6. Whether your car has any known problems
Slight oil leak from the oil cooler that the oil filter screws into. New oil cooler engine-side oil seal in hand, and fixing this leak this weekend.
BLUF: Running Rotella T6 now, typically run Castrol EDGE or Mobil 1 before. Always ran synthetics, but T5 would work just as well according to the manual. Want a protection oil, rather than a fuel economy oil given the car's age.
Planning to add 3 gauges. Was planning to add oil temp and pressure, but my Subaru mechanic and personal friend says monitor oil pressure first, because the stock oil cooler and quality oils will be sufficient protection for a stock engine.
Therefore I am now planning to go with boost, oil pressure and exhaust gas temp gauges instead.
Any thoughts on this approach?
1. What kind of vehicle you have
blue '04 WRX at 230,000 km. Running remarkably well, but considering a stock engine rebuild in due course anyway.
2. What your owner's manual says -- not just viscosity, but certifications (look for acronyms like API SM, ILSAC GF-4, etc.) and change intervals as well
ILSAC GF-3 (API starburst) OR API class SL "Energy Conserving", OR API class SL "Energy Conserving" as a backup option
5W-30 preferred, 10W-30/10W-40 acceptable above 0 degrees F.
For severe driving conditions, API SL (or SJ) SAE No.: 30, 40, 10W-50, 20W-40, 20W-50.
Synthetic oil of the same requirements allowed.
OCI: 6,000km
3. Where you live
Toronto, Ontario, Canada - the great white north. Chicago weather.
4. How you drive (easy? hard? fast? slow?)
Moderate on the street, and push the WRX hard at the track in Time Attack, Autoslalom and Lapping Days. Track sessions rarely exceed 1/2 hour in duration.
5. What your daily drive is like (short trips? long trips? city? highway?)
Long trips 150 km north to Orillia and back, mid-week and weekends, but I walk to work.
6. Whether your car has any known problems
Slight oil leak from the oil cooler that the oil filter screws into. New oil cooler engine-side oil seal in hand, and fixing this leak this weekend.
BLUF: Running Rotella T6 now, typically run Castrol EDGE or Mobil 1 before. Always ran synthetics, but T5 would work just as well according to the manual. Want a protection oil, rather than a fuel economy oil given the car's age.
Planning to add 3 gauges. Was planning to add oil temp and pressure, but my Subaru mechanic and personal friend says monitor oil pressure first, because the stock oil cooler and quality oils will be sufficient protection for a stock engine.
Therefore I am now planning to go with boost, oil pressure and exhaust gas temp gauges instead.
Any thoughts on this approach?
o you have another vehicle as a daily driver?
