Engine oil for 97 850 T5

[tjts1]

I switched our 850 to synthetic at 175k miles. 17k miles later and no problems. I use Shell Rotella synthetic 5w40 every 5k miles. Whatever oil you choose, make sure it has a diesel rating and not API 'energy conserving' label. They don't screw around too much with these oils.

I've been considering the same oil, as I use it in my VW. Available at Wal-Mart too, which is a bonus. However what scares me is it is for diesel cars, correct? Isn't it too heavy for the 850's engine?

Not really. It carries both a diesel and gasoline engine rating and volvo recommends 5w40 for all temperatures up to 104f.
https://www.customers.volvocars.com/own ... tml#pg8.10

The only difference is the oil has better additives to deal with diesel engine soot and they don't skimp on ZDDP like API oils. I've been using this oil in a 240, 960, 850, Mercedes 190e and my BMW 318i. None of them have any leaks or problems.

[volvomileage]

actually for the 850 volvo originaly recommended 10w30 but that was way back..

i wouldnt use 10w30 in a constant sub zero winter,i prefer using a 5w30 5 w 40 in winter and 10w30 in summer...