Sure. I had 2 white blocks and a redblock, but the car with the full gauges was a 98 V70R. It's a nearly identical engine to yours, just some minor differences which shouldn't affect oil temps. Just driving around town, oil temps were in the 85-90C range. Extended highway temps, 90-95C @ 60-65mph, 95ish, 75-80mph 100-105. Driving up an extended mountain pass @ 75mph in 3rd gear, temps would hit 105-109. I used a non A3-rated oil once, (who's brand I won't reveal less I get labeled a hater! It was a 5W30 syn) and it was too thin at the end of a 8K OCI. Going up Mt. Hood @ 75mph, I had the idiot oil pressure light come one, and was around 20-25psi @ 4K rpms. After that, I went back to using an A3 rated oil only. These temps were "summer", but that's only 70-80 degrees. The Mt. Hood oil pressure incident was in very warm ambient temps, probably 90+. Oil temps weren't much different in the dead of winter, even when I drove over to the cold side of the state, probably 5C less, max--though it took a little longer to warm up. I had a belly pan on the car, so that may be a factor in the winter temps. Anyway, hope that helps. As I said earlier, if I still had my R I think I'd seriously consider using the G-oil 5W30. It seems as though it would be a good fit for this car. One issue with the thick oil is that oil pressure at the turbo seals is astronomical until the oil is fully warmed up (which is why they often need to be replaced if you get on the car until it's really warmed up). They're easy to replace on the T5, not so easy on the R as you need to drop the drive shaft.
Originally Posted By: sleddriver
I'd be interested in seeing some specific numbers, if you'd care to share. Also what make & yr of Volvo was this? NA or T?
Originally Posted By: JOD
I had a oil temp and pressure gauge on what was basically the same engine. I regularly saw oil temps of >100C in regular driving.