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Author Topic: Head Bolt Lubricant  (Read 2026 times)

filippe

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Head Bolt Lubricant
« on: November 21, 2023, 03:16:44 »
What type/brand of oil has been used on the head bolts before reinstalling?
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Kevkeller

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Re: Head Bolt Lubricant
« Reply #1 on: November 21, 2023, 07:14:12 »
Technically I don’t think you use a lubricant on head bolts because it changes the torque values. If I recall correctly there’s an amount you can drop the torque for a lubricated bolt, maybe 10%. But I don’t know for sure.
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1970 280 SL

Benz Dr.

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  • Canada, ON, Port Lambton
  • Posts: 7278
  • Benz Dr.
Re: Head Bolt Lubricant
« Reply #2 on: November 21, 2023, 20:03:05 »
Engine oil on the threads and the washer under.
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1966 230SL 5 speed, LSD, header pipes, 300SE distributor, ported, polished and balanced, AKA  ''The Red Rocket ''
Dan Caron's SL Barn
1966 230SL 5 speed
1970  3.5 Coupe
1961  190SL
1985   300CD  Turbo Coupe
1981  300SD
2013  GMC  Sierra
1965  230SL
1967 250SL
1970 280SL
1990 560SEC
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