Quote:
2004 VOLVO S40 1.9L 4-cyl Engine Code B4204T4 Turbo
LUBRICANTS & FLUIDS: Lookup Another Vehicle
Engine Oil
Grade 1......SL
Maximum Performance SAE 5W-30 Signature Series 100% Synthetic Motor Oil (ASLQT)
Performance Plus XL 5W-30 Synthetic Motor Oil (XLFQT)
Performance OE 5W30 Synthetic Motor Oil (OEFQT) Below 86 F......5W-30 [1]
Automatic Transmission,AW55-50SN......TIV [2]
Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid (ATF) (ATFQT)
OE Multi-Vehicle Synthetic Automatic Transmission Fluid (OTFQT)
Fluids
Brake Fluid......HBH
AMSOIL Brake Fluid DOT-4 (BF4SN) [3]
Clutch Fluid......HBH
AMSOIL Brake Fluid DOT-4 (BF4SN) [3]
Power Steering Fluid......PS
Power Steering Fluid (PSFCN) [4]
[1] Synthetic SAE 0W-30 or SAE 0W-40 oils are recommended for
driving in extreme temperatures (hot or cold), when towing
a trailer over long distances, and when driving in
mountainous areas.
[2] Use JWS3309, Volvo P/N 1161 540
[3] Hydraulic Brake Fluid, DOT 4
[4] Pentosin CHF 11S P/N 1161529
FILTERS:
Oil Filter MANN Oil Filter (HU819x)
Oil Filter WIX 57021 Oil Filter
Air Filter Absolute Efficiency Air Filter (EAA29)
Air Filter MANN Air Filter (C35941)
Looks like they're saying 5W-30 synthetic is preferred for normal driving conditions below 86 F, but to go 0W-30, 0W-40 synthetic for extreme conditions like towing a boat up a mountain or something. Personally, I'd go with whichever kept the engine the quietest and that's usually the thicker grades.