DrCharles
Full Access Member
I had an expiring coupon for $13 off an oil change at my local quick-change place that usually can be trusted... they got it done, but they also took it upon themselves to top up the very low oil in my BW1356 transfer case... with GL5 80W-90! I asked *** did they do that for and 1) they said it was leaking everywhere and slinging oil from both ends (apparently the kid in the pit couldn't tell the difference between ATF and black diesel oil that had been blown off the engine); 2) apparently didn't realize that the reason it leaks a little is that some gorilla (before I got the truck) had overtightened the drain plug and put a hairline crack in the boss, which was the only leak source because I rebuilt it myself a couple years ago; and 3) "we always do that for GM 4x4 so they leak less" (!)
I let the manager know in no uncertain terms not to deviate from factory spec without talking to me first!!
Anyway. I could get 4 psi boost with plenty of black smoke out the tailpipe and loud leaking from the slip joint. So at least the turbo is working. It seems to have a larger bearing clearance because my oil pressure is reading lower. The sender is on the turbo feed housing, which I'm feeding from the rear gallery port via a short #4 Teflon braided line.
Now I have to drain and refill the transfer case, lucky it's only 2 qts. - Maybe pull the right-side manifold so I can get the Y out of there, or even get lucky and turn the studs out of the manifold. I seem to recall replacing them a few years ago, when I added the factory turbo setup, so they don't bottom out on the factory original hex bodies, and I would have used anti-seize. Crossing fingers.
I let the manager know in no uncertain terms not to deviate from factory spec without talking to me first!!
Anyway. I could get 4 psi boost with plenty of black smoke out the tailpipe and loud leaking from the slip joint. So at least the turbo is working. It seems to have a larger bearing clearance because my oil pressure is reading lower. The sender is on the turbo feed housing, which I'm feeding from the rear gallery port via a short #4 Teflon braided line.
Now I have to drain and refill the transfer case, lucky it's only 2 qts. - Maybe pull the right-side manifold so I can get the Y out of there, or even get lucky and turn the studs out of the manifold. I seem to recall replacing them a few years ago, when I added the factory turbo setup, so they don't bottom out on the factory original hex bodies, and I would have used anti-seize. Crossing fingers.