THe PRV V6's can be good motors as long as the oil has been changed on time and the car has never been over-heated. My 79 262C has 160K and I know the car has been driven like S*#T but it still runs strong in Southern CA bumper-to-bumper traffic. My 79 264GL is on its second PRV and running good so far. Click on the following link for a good past post regarding the PRV engines: PRV Engine Post . I would take a look at the cams and the engine over all to see if it is something simple that can be fixed in order to make the car run. Compared to my 84 245DL I feel that the V6 is a lot smoother and thus enjoy driving it every chance I get. I personally would love to get my hands on a 265GL to complete my hat trick. You are one lucky man with all those Volvo's. Good Luck with the 265GL!

Sincerely,
--
Julio Meza

1979 264GL B27F 124K --> BW55->M46, CLS, IPD Sway, 81+ Dash, Gauges, Flat Hood

1979 262C B27F 159K --> Restore Project w/Possible B21FT

1984 245DL 214K -->Wifemobile