Biotoxic 74 Report post Posted January 11 Hello, going to change the gearbox this Friday. While it's off I'll do a rear main crankshaft seal as I suspect it's leaking(due to amount of oil on pan) I've seen a few brands online besides OEM. Anybody had done this before or anything that might need to be looked at while gearbox is off.. mounts, bushes etc. 235k miles on a clock... Share this post Link to post Share on other sites
dirtydirtydiesel 111 Report post Posted January 11 I'd definitely go oem on the seal, I've done a few but not on a bm Always ended up going oem, all the aftermarket ones failed. 1 Biotoxic reacted to this Share this post Link to post Share on other sites
GoNz0 479 Report post Posted January 12 As it's a usually a one off and not expensive, go BMW to be safe. Do the sump gasket at the same time. Share this post Link to post Share on other sites
thomp1983 20 Report post Posted January 12 Propshaft bearing and guibo/flex disc as you'll have it half off anyway 1 Biotoxic reacted to this Share this post Link to post Share on other sites
Biotoxic 74 Report post Posted January 13 £76 oem from dealer, a bit steep but will see what's included. Sump gasket has been done already. Will see how it goes Share this post Link to post Share on other sites
Numero9 2 Report post Posted January 14 Although seems steep. If you go aftermarket & it fails you'll spend more in your time and another seal. I'd say OEM too Share this post Link to post Share on other sites
GoNz0 479 Report post Posted January 14 8 hours ago, Numero9 said: Although seems steep. If you go aftermarket & it fails you'll spend more in your time and another seal. I'd say OEM too Get your vin on the invoice and proof it was professionally fitted and BMW would carry out the repair FOC under warranty. That isn't usually a good thing unfortunately as the techs are useless most of the time. Share this post Link to post Share on other sites
Biotoxic 74 Report post Posted January 15 It wasn't the main rear... Got a massive leak at the front of the engine. Dude who owns the garage said the gasket between the oil filter and engine tend to leak.. Anybody else had this before? Share this post Link to post Share on other sites
dirtydirtydiesel 111 Report post Posted January 16 5 hours ago, Biotoxic said: It wasn't the main rear... Got a massive leak at the front of the engine. Dude who owns the garage said the gasket between the oil filter and engine tend to leak.. Anybody else had this before? Quite common & at your millage not surprised. Share this post Link to post Share on other sites
GoNz0 479 Report post Posted January 16 19 hours ago, Biotoxic said: It wasn't the main rear... Got a massive leak at the front of the engine. Dude who owns the garage said the gasket between the oil filter and engine tend to leak.. Anybody else had this before? I have a m8 in swindon contacted me in a panic and it was just the oil housing gasket, he soon calmed down Share this post Link to post Share on other sites
Keith_H 20 Report post Posted Sunday at 10:37 AM On 1/15/2021 at 6:39 PM, Biotoxic said: It wasn't the main rear... Got a massive leak at the front of the engine. Dude who owns the garage said the gasket between the oil filter and engine tend to leak.. Anybody else had this before? They do go but it is very easy to change both gaskets. A couple of the bolts are difficult to get to with the inlet manifold in place but it can be done with wobble bar extensions on a 1/4" socket set think I did mine in well under two hours on the drive at home (N52 engine) it was over a year ago but I don't remember anything too dramatic. Share this post Link to post Share on other sites
