Author Topic: Question about lower oil pan bolts  (Read 1445 times)

mnahon

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Question about lower oil pan bolts
« on: March 13, 2023, 01:52:06 »
Most of the bolts (front and sides) that hold the lower oil pan thread into through holes. I am wondering whether the holes for the rear bolts end in the crankcase. More specifically, should I be using sealant on those bolts to prevent possible leakage along the bolt.

Thanks
Meyer Nahon
Montreal, Canada
1968 MB 280SL Auto Euro LHD Silver
2021 Tesla Model 3

Benz Dr.

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Re: Question about lower oil pan bolts
« Reply #1 on: March 13, 2023, 03:40:28 »
The rear screw holes are blind but you should check each one to be sure.
1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn

1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1988 560SEC

mnahon

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Re: Question about lower oil pan bolts
« Reply #2 on: March 13, 2023, 23:17:29 »
Thanks Dan!

Meyer
Meyer Nahon
Montreal, Canada
1968 MB 280SL Auto Euro LHD Silver
2021 Tesla Model 3

afibbe

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Re: Question about lower oil pan bolts
« Reply #3 on: March 15, 2023, 16:52:18 »
I had minor leaks on my upper pan. I removed the bolts one at a time, cleaned them, put some new liquid gasket on the threads and reinstalled the bolt. I tightened the bolts as close as I could to the correct torque. Leeks stopped.
Alex Fibbe
1966 230SL
USA, Cincinnati, OH