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BMW 3-Series (E90 E92) Forum
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Oil Pan Gasket + OEM Toyota FIPG?
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05-09-2021, 08:55 PM | #23 | ||
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05-09-2021, 09:24 PM | #24 | |
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I raised my eyebrows when I first learned that the motor was glued together -- but it does seem to work.
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05-09-2021, 09:33 PM | #25 | |
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05-10-2021, 07:23 AM | #26 | |
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05-10-2021, 09:09 AM | #27 | ||
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05-11-2021, 09:26 PM | #28 | ||||
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05-12-2021, 12:25 AM | #29 | |
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Holy shit. Actual data being used to determine what to use to resolve a common problem?! I must be dreaming. Good find, thanks for sharing. |
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05-15-2021, 05:28 PM | #30 |
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Thanks for all the info and suggestions, gonna do my xDrive pan gasket soon and really don't wanna repeat the job.
Sounds like a thin layer of any good liquid gasket on both sides of an original BMW gasket should be good for another 100k. High heat resistance seems to be what we need, these engines run hot, maybe moreso with a N51. |
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05-15-2021, 07:55 PM | #31 | |
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On the other hand, it has a crappy transmission and is roughly 10% as fun to drive as my BMW. Win some/lose lots.
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05-18-2021, 07:11 PM | #32 | |
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For whatever it's worth, I found reference to Loctite 5970 with the oil pan gasket on RealOEM. It's an oil resistant silicone sealant:
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https://www.realoem.com/bmw/enUS/par...&q=83190404517 |
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09-02-2021, 08:46 AM | #33 |
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I'm about to install my gasket.
So, it sounds like a very thin layer of gasket maker just smeared on the metal part of the gasket on both sides is the way go? I will get the Permatex Optimum Black. It's similar to Ultra Black, but specified for dissimilar metals and more flex for vibration resistance. It's interesting that Loctite 5970 is mentioned in the parts catalogue, but not in the service manual. On a side note, I find that many sealants/liquids specified by BMW are a fast-setting version of the available sealants, which makes sense for dealerships as they cannot wait 24 hours for it to cure before refilling fluids and get the car out of the bay. This is also true for some bushing retaining compounds specified in the manual. |
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09-02-2021, 10:30 AM | #34 |
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Optimum Black is something new. Sounds like a flexible version of Ultra Black.
Ultra Black's elongation is 360%. Optimum >400%. Do look at the Right Stuff if you need to drive off immediately, with elongation at break 550%, ASTM D412. Ultra series: https://www.permatex.com/products/ga...asket-maker-4/ Right Stuff: https://www.permatex.com/product-cat...gasket-makers/ I used Ultra Black on BOTH sides back in May. Thin coats. So far so good. This is what BMW should have used in the factory. https://www.e90post.com/forums/showp...&postcount=327 |
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09-02-2021, 10:41 AM | #35 | |
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Note : you should replace the oil pan sensor gasket while you are in there. That sort of goes without saying. |
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09-02-2021, 10:56 AM | #36 |
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Yup that was basically what I did. I applied a flatter and wider layer by holding the tube down close, using the old gasket imprint as a guide.
Ultra Black was thick enough to hold the gasket. No need for tie wraps. Do a couple of trial fits first before applying RTV. For the oil level sensor gasket I used Ajusa 16078850. See my OPG link above. I would change out the oil pickup tube o-ring and mounting bolts with the pan off, as mentioned in my post. I was going to RTV it shut but a spring housing protrusion would have created a smearing mess, so I left it. I should have bought the o-ring and bolts in retrospect. |
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09-02-2021, 01:32 PM | #37 | |
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I looked at the pickup tube, but is there any reason to replace that o-ring? It's already immersed in oil pan, correct? Where would that o-ring failure show up? |
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09-02-2021, 04:14 PM | #38 |
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I am not sure how much of the horizontal portion of the oil pickup tube is submerged in oil while running.
My reasoning was if that o-ring's material is as bad as the oil pan gasket, valve cover gasket, oil filter housing gasket and valvetronic "football" gasket, then spending all those hours taking off and putting back the oil pan would be a good time to replace that. If that o-ring hardened and shrank with age and heat, I would think some air would get sucked past it. |
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09-03-2021, 09:08 AM | #39 |
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I would never use *only* RTV as a gasket on a BMW N51/N52, the gasket must be there to prevent galvanic corrosion between the aluminum pan and magnesium bedplate. The risk of metal-to-metal contact is too high with just a thin layer of RTV.
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09-03-2021, 05:32 PM | #40 |
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I was wondering about that and decided to use the oil pan gasket on hand anyway instead of just plain RTV as I originally wanted to do.
For automatics the pan is aluminum, so that might not matter. For manual transmissions as I understand the pan is steel. Anyway the sealing on this engine is just plain awful. Those engineers ought to be sent to Japan to study. |
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09-04-2021, 08:39 PM | #42 |
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Have you guys had an issue with a missing bolt from the oil pan bolt kit?
I don't want to derail this discussion, so I started another thread here on this: https://www.e90post.com/forums/showt...php?p=27999177 Since many of you have gone through this, please chime there. Thanks. |
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