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there have been a lot of questions what oil to use in the bevel gear in the early AWD models. I just bought some bevel gear oil from the local volvo dealer, and it happens to list exactly what it is on the bottle. I paid $40 CAN for the 1L bottle, so hopefully now that we have this information for real we can go buy this somewhere else like Canadian Tire for much less.
It is volvo part number 1161648:
AWD
Transmission Oil
Fully synthetic oil
SAE 75W-90
API GL-5
I suspect the 'synthetic' aspect is probably very important.
The API GL-5 service classification is explained here:
http://www.lubrizol.com/products/automotive-gear-oil/GL5.asp
http://www.finalube.com/reference_material/API_Automotive_Gear_Lubricant_Service_Categories.htm
"+GL-5
This designation denotes lubricants intended for gears, particularly hypoid gears, in axles operating under various combinations of high-speed, low-speed, high-torque, and shock-load conditions. Lubricants qualified under U.S. Military Specification MIL-L-2105E (formerly MIL-L-2105D) satisfy the requirements of the API GL-5 service designation. Performance test details are in ASTM Publication STP-512A, "Laboratory Performance Tests for Automotive Gear Lubricants Intended for API GL-5 Service."
API GL-5 quality gear lubricants possess adequate extreme pressure characteristics for essentially all automotive gear applications to prevent wear, pitting, scoring and ultimate gear failure, along with protection against oxidation, thermal degradation, rust, copper corrosion, foaming and water emulsification. API GL-5 oils are relatively equivalent to MIL-L-2105E gear lubricants (see below) and are the most widely used automotive gear lubricants in North America for automobile, truck, bus and heavy construction equipment applications."
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1998 V70 AWD Turbo 180k+
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