Where else could be leaking oil...

[bowtie2bimmer]

So I have this oil leak that's a pain in my ass to hunt down. Oil is coming from the passenger side. I have done oil pan gasket (twice), oil pressure switch and the oil circulation seal. What else? I think it is coming farther back like where the front subframe is... Ideas?

[Rose E30]

Have you confirmed it is oil? It could be the steering rack. Have you checked the valve cover gasket?

[jaywood]

Oil circulation seal? The red ring that sits between the block and the oil filter housing? I had a leak from that location for a long time. I changed the gasket and it still leaked. So one day I deleted the oil cooler and the filter housing and threaded the oil filter directly onto the block (like some of the 325e's). No more oil leaks from that location :)

Clean up your block where it looks greasy/oily. Examine the block after a drive and find the source from where it is leaking.

[5Toes]

headgasket, etc.

[efficient]

you should clean the passenger side then throw in some uv dye. take it for a drive then just hit it with a uv light.

[bowtie2bimmer]

Its definitely oil because every 3 weeks it so it needs oil.

As for the oil circulation seal, its the housing the filter goes on. BMW sells a kit with a snap ring, cap and seal. But the leak sends to be coming from farther back than that.



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[randomtask37]

my old 87's 325is had a leaky headgasket causing me to have to refill oil every 2-3 weeks. I hope that isn't the case with your car. its kind of a bitch to replace.

[bowtie2bimmer]

my old 87's 325is had a leaky headgasket causing me to have to refill oil every 2-3 weeks. I hope that isn't the case with your car. its kind of a bitch to replace.

Ya I hope not

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[jlevie]

As stated earlier, throughly clean the engine and watch for the first sign of oil. UV dye & a blacklight can make the search for the leak a bit easier.