I wonder if anyone has used one of these, which look the same as the one of FCP Euro but are half the price. https://www.ebay.com/itm/Crankshaft-Camshaft-Cam-Engine-Alignment-Timing-Locking-Tool-For-Volvo/263583848867?_trkparms=aid%3D555018%26algo%3DPL.SIM%26ao%3D2%26asc%3D20160908110712%26meid%3Df5...

Yep, tested positive for combustion gasses. I thought that was odd since there are no other signs of a bad head gasket. I guess I was in denial. Lol.

I think I'm going to try BlueDevil.

I should also add, it's winter in mn, hasn't been above freezing for a month or so, heat blows hot.

I've a bit of a head-scratcher. I'll drive my 2005 xc90, it gets up to temp just fine & holds at half meter. when the engine cools down, the "low coolant" alert pops up. I check the tank, it's a little low. pop the cap, pressure release & the level comes back up to max & the al...

Living in MN. On auto, the blower doesn't turn on until the engine reaches temp.