This is the 1998 S70 parts catalog: https://weblisher.textalk.se/gcp/20160203-036/paper.pdf

The '93 belt is Volvo 271952 or Continental TB217, 143 curvilinear teeth, 1362.1mm by 21mm. The '95 belt is Volvo 9180954 or Continental TB252, 148 modified curvilinear teeth, 1410mm by 23mm. The '99 belt is Volvo 8627484 or Continental TB331, 142 modified curvilinear teeth, 1353mm by 23mm. Note tha...

The service manual says to use petroleum jelly on the injector O-rings, not silicon grease.

At least if using a silicone hose, it's not possible to install the upper turbo coolant hose with just your hands. Robert alludes to the technique in his video, but doesn't show it. First, slide the hose onto the reservoir pipe as far as it will go. Then, put the tip of a flathead screwdriver into t...

Originally, Volvo recommended inspecting or replacing airbags after 10 years (extended in 2003 to 15 or 20 years depending on model year). Per Service Manager Bulletin 88-017 in 2006, airbag lifetime has been extended to "the lifetime of the car". Does that mean the airbags will work? Mayb...

The factory recommended torque was a mere 8.9 ft-lbs (increased from 7.4 ft-lbs), but that was with sealant and no gasket. I found one technique recommended online, although for a different transmission: The trick though is to go to [half torque] on each bolt, SLOWLY. Once you have confirmed [half t...

You could get FTDI part number US232R-100-BULK, cable assembly made by FTDI, directly from FTDI, or from a franchised distributor like Mouser or Digi-Key. Then, for the VAG KKL portion, you would add a VAG KKL cable with DB9 connector - no USB-serial bridge chip inside. Buying an "FTDI inside&q...

The 4-speed automatics originally took Dex/Merc, but Volvo has said JWS3309 is also OK and may give smoother lockup engagement (Tech Net Note 40-04 and Service Bulletin 43-0029). One option for JWS3309 is Toyota T-IV, part number 00279-000T4-01 for 1 quart or 00279-000T4-6S for 6 quarts, about $6 a ...

The thermostat could be stuck open. I would replace it. Be careful of the bolts on the thermostat housing, they strip easily and can be difficult to remove.

That drive cycle is not enough for most P80s anyway. The drive cycle for our problem children is attached.