[AngelFarelli]

Car is at 140k miles and I need to replace the oil pan and gasket. Should I buy some rod bearings and have them check to see if they need to be replaced and if not return afterward ? I plan on tuning this car , are there aftermarket bearings better for more power or is Oem better ? Are there any other preventative maintenance issues I should hit while I have the subframe down such as engine mount or water pump? Unknown history on vehicle n55 f30

[fastboatster]

Might get a better answer in the f30 section

[mainbearing]

Engine mounts are what some say.

[NGEE]

Just did mine at 200k, and took the opportunity to do the water pump/thermostat, engine mounts and control arms and bushings. Super easy with the sub-frame out. And since I was doing the water pump, I went ahead and replaced the leaking radiator and all the hoses.

You probably know what you are doing better than I, but you may want to read my cross-theaded sub-frame bolt story here: https://www.e90post.com/forums/showthread.php?t=1690933

Also, one lesson learned for me is to concentrate on the gasket-sealing bolts first, which is to say the ones all the way around the perimeter of the pan. THEN do the bell-housing-to-oil-pan bolts. If you do it in the reverse order, you run the risk of not getting a good seal on the rear part of the pan.

Finally, I'm assuming you are getting a new set of oil pan bolts. I found that it was well worth it to get a decent small-gauge digital torque wrench just for peace of mind. This one was great to work with: https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

[mweisdorfer]

O2 sensors

[mainbearing]

Let us know how the process goes. This DIY below is how I plan to do mine when the time comes. We have a relative with an 09 E90, I think these s#*t cars leak like a sieve. They got rid of that PoS last year because they would have to pay a shop.

https://www.e90post.com/forums/showthread.php?t=1180020