johnld Posted June 23, 2018 Share Posted June 23, 2018 What oil should be used in a Scammell pioneer gearbox? The manual says 50HD, but what does that translate to in a modern grade? Thanks Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted June 23, 2018 Share Posted June 23, 2018 11 minutes ago, johnld said: What oil should be used in a Scammell pioneer gearbox? The manual says 50HD, but what does that translate to in a modern grade? Thanks That is SAE 50 heavy duty engine oil, is was quite common to see engine oils specified for gearboxes. Quote Link to comment Share on other sites More sharing options...
johnld Posted June 23, 2018 Author Share Posted June 23, 2018 Great thanks! Quote Link to comment Share on other sites More sharing options...
Scammell4199 Posted July 13, 2018 Share Posted July 13, 2018 I spoke to Morris Oils some time ago and they said 50HD was SAE90. They converted other oils listed on the Pioneer lube chart as follows: 30HD - SAE30 (Engine oil) C600 - SAE140 I'm totally open to correction on that though, and if it is wrong would like to know before i go filling up all my newly rebuilt drivetrain bits. Richard Quote Link to comment Share on other sites More sharing options...
REME 245 Posted July 13, 2018 Share Posted July 13, 2018 Morris would still sell SAE 50 so strange they would recommend you to SAE90. The other two are correct. Quote Link to comment Share on other sites More sharing options...
Invincible Mick Posted August 15, 2018 Share Posted August 15, 2018 Hi Johnld, No expert here, but was told not to use modern EP oil in Diff or side casings due to the sulphur content attacking the bronze worm wheel and any other plain bronze bearings. I think the gear box is all roller needle or ball bearings and know of people that say its OK. Personally, given the mileage and use they get now I just stick to the original straight oils. Mick Quote Link to comment Share on other sites More sharing options...
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