I'm driving a 91 Volvo 940SE with about 160,000 miles on it. Turbo (water cooled, BTW) is original and doesn't seem to be losing much oil through the seals yet - maybe a tbs every oil change as collected in the intercooler. The engine appears to be remarkably sound for it's mileage and doesn't seem to exhibit the piston slap that is supposed to be common with this vintage. There is slight valve noise just off idle, but not much to worry about.
I intend to make the change to full synthetic at the next oil change and wanted to get some input on whether to bother with something like AutoRx first or just go ahead and swap.
My biggest concern is if there's any crud that's going to be let go and mess with the turbo bearings and seals.
I'd hate to do something like this in the name of good and then have to explain to DW that there was a technical problem.
Thanks!
Ben
I intend to make the change to full synthetic at the next oil change and wanted to get some input on whether to bother with something like AutoRx first or just go ahead and swap.
My biggest concern is if there's any crud that's going to be let go and mess with the turbo bearings and seals.
I'd hate to do something like this in the name of good and then have to explain to DW that there was a technical problem.
Thanks!
Ben