Sealant for doing oil pan?

[Anton CH.]

I just used on the corners of the gasket and it's OK.

[632 Regal]

you could put a dab of silicone in sharp corners and crap. the original gaskets might have been cork in the beginning?

Ok that was what I was wondering - I have like 3 or 4 metal/rubber gaskets and bentley said use silicone so I was a little confused. That's all - I am swapping oil pans out because I just got my other oil pan welded for turbo oil return

[Martin in Bellevue]

I'd be concerned about silicon fumes getting to the wideband O2 sensor.
If you are compelled to put something in there with the gasket, try an O2 sensor-safe gasket adhesive (hylomar?) between the pan & the gasket.

[Jon K]

I'd be concerned about silicon fumes getting to the wideband O2 sensor.
If you are compelled to put something in there with the gasket, try an O2 sensor-safe gasket adhesive (hylomar?) between the pan & the gasket.

Should I just say F it with the silicone? This motor will probably be out of the car during christmas break from school...

[Bill R.]

Jon you can use permatex gray for imports or the blue oil resistant silicone for the best seal at the four points indicated here. The orange,red,green,yellow,clear,black,brown will also work but these two are most likely the best for your purposes. Almost all silicones available now days are sensor safe meaning they won't affect 02 sensors. It will state on the tube if its sensor safe.

Should I just say F it with the silicone? This motor will probably be out of the car during christmas break from school...

[Jon K]

Jon you can use permatex gray for imports or the blue oil resistant silicone for the best seal at the four points indicated here. The orange,red,green,yellow,clear,black,brown will also work but these two are most likely the best for your purposes. Almost all silicones available now days are sensor safe meaning they won't affect 02 sensors. It will state on the tube if its sensor safe.

Thanks very much bill - can I opt not to use any silicone? Will it still seal? Also, the diagram you attached sounds much like the bentley manual - are they forgetting to metion the motor has to be lifted or subframe lowered, or is that not necessary afterall?

[Bill R.]

safe side. That diagram is from the factory service manual and they don't mention raising the motor on an m50 but they do mention removing the fan shroud, the fan, the power steering pump, the dipstick tube.

Thanks very much bill - can I opt not to use any silicone? Will it still seal? Also, the diagram you attached sounds much like the bentley manual - are they forgetting to metion the motor has to be lifted or subframe lowered, or is that not necessary afterall?

[Jon K]

Ok - Ive removed all that crap before so I am going to go that route. Jacking up the motor/dropping subframe just sounds... not fun.

I have a full tube of Permatex Hi Temp RTV Silicone Red "GASKET MAKER" I checked their website, doesn't mention sensor safe. Hrm, think its good to use?

Also - should I let the RTV, should I use it, fully cure (who know show long that'd take?!) or is it ok to drive maybe ~ 1 hr or so after installation.

[Bill R.]

little too pricey not to go get a tube of fresh. Autozone now carries the loctite brand in the gray import gasket maker and its sensor safe.I'm holding a tube of it reading the label and it clearly states sensor safe on it.
If your going to use just a small amount at the four joints then don't worry about letting it cure, it will harden enough by the time your ready to drive, unless your going to be pressurizing the crankcase right away, such as 8 pounds of boost.

Ok - Ive removed all that crap before so I am going to go that route. Jacking up the motor/dropping subframe just sounds... not fun.

I have a full tube of Permatex Hi Temp RTV Silicone Red "GASKET MAKER" I checked their website, doesn't mention sensor safe. Hrm, think its good to use?

Also - should I let the RTV, should I use it, fully cure (who know show long that'd take?!) or is it ok to drive maybe ~ 1 hr or so after installation.

[632 Regal]

let it dry at least 12 hours