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YOUR RESEARCHSealing the oil pan
Leading reported evidence
Clean lower section of the engine / alternator and drove
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Performed · outcome unconfirmed
I cleaned the lower section of the engine / alternator and drove for the past couple of months.
Leading evidence: 'Clean lower section of the engine / alternator and drove' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean any decent silicone sealer will be fine' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
Yeah as long as both surfaces are clean any decent silicone sealer will be fine.
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Suggestion · Original poster
Hi everyone, I’m replacing the sealant material on the oil pan and after cleaning everything thing, I’m ready to reinstall the oil pan.
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Hi everyone, I’m replacing the sealant material on the oil pan and after cleaning everything thing, I’m ready to reinstall the oil pan. I’m planning on using Loctite SI 5900 t o seal the the pan where it mates with the engine block. I’m planning on applying a single thread of sealant before reinstalling, but I was wondering if I should also spread the Loctite sealant by hand before I put everything together. Are there any experts that can help me with this question?
Thanks,
— Sam
Hey guys. I went to change my oil not too long ago and I noticed a pretty decent amount of oil all around the bottom part of the alternator. I noticed specifically a bolt was pooling with a bit oil and snugged it up just a bit. I cleaned the lower section of the engine / alternator and drove for the past couple of months. Sure enough, checking back and I still see a decent amount of oil here.
I don't understand where it's coming from as it seems like a strange place to be leaking oil; an alternator bolt??? I'm wondering if it's not really this bolt and maybe a place above that is collecting here. Any ideas? I looked from the top of the engine and I don't see any evidence of oil although it is really hard to see down below (might need to go get a mirror).
Here's a pic of my oil soaked alternator. Also, engine oil consumption is normal so I don't think it's anything of a huge concern now but I'd prefer for my car to not be leaking oil ...especially on the alternator
Quote:
Less is more in this case. Too much sealant and it can break off inside and plug up oil screen. There is much made of applying this sealant but the mating surfaces are very good so not much sealing is actually required in my experience. I’ve had mine off a couple of times and just smeared a thin coat in with my finger. Zero leaks either time.
No direct experience but there are YT videos of Porsche engine assembly and the sealant is applied by machine. A fairly narrow bead is laid down and encircles bolt holes that go through the plate.
Not sure Loctite stuff is the right stuff to use. Porsche lists a specific sealant for this job along with sealing the cam covers to the heads and for use in other places in the engine assembly.
No need to *smear* the stuff. It gets "squished" out and forms the seal. The trick is to install the sump plate without any sideways motion or fumbling around which can compromise the bead and result in a leak.
As is the case with the cam shaft cover so is I believe the case with the oil sump/pan and that is the sealant does not form a layer of sealant between the two mating parts but fills in all the voids, very shallow depressions left by the machining operation. The block bottom and sump plate are in a large percentage in metal to metal contact with the seal created by the metal to metal contact with the very shallow gaps/voids between these metal to metal contact areas filled in with sealant.
