thedawnpatrol Posted January 9, 2015 Share Posted January 9, 2015 So, what are the recommended oils to use in a 1940's British truck transmission system ? I have looked on the Morris Lubricants website and they offer :- Golden Film AG90, AG140 and AG250, they all say the same, but are they ? what do you use ? cheers Jules Quote Link to comment Share on other sites More sharing options...
0 16svt Posted January 9, 2015 Share Posted January 9, 2015 No not all the same, the different numbers are the SAE rating. So AG 90 gear oil is straight SAE90 gear oil and AG140 is SAE 140 and so on. These are NOT EP oils and are suitable for old vehicles that could have phosphor bronze bearings. I use Morris Goldfilm SAE30 in my AEC 7.7 and Morris AG 90 in my axles and gearbox on my Matador. I really Rate Morris, they are a family run British concern and really know their stuff. Quote Link to comment Share on other sites More sharing options...
0 AndyB Posted January 9, 2015 Share Posted January 9, 2015 For the jeep I use SAE 90 and the MW is SAE 140 Andy Quote Link to comment Share on other sites More sharing options...
0 David Herbert Posted January 9, 2015 Share Posted January 9, 2015 (edited) The number reprisents the viscosity - the bigger the number the thicker is the oil. The safe bet is to use the same viscosity as was originaly recomended. It is quite easy to find the translation from the WD designation to SAE viscosities. Most gearboxes used 30 or 50 viscosity oil. Whatever you do DO NOT use an oil with EP in its description anywhere that does not specificaly require it. The EP additives WILL quite quickly break down the surface of any yellow metal (brass or bronze) parts which will wear at an unbelievable rate. Older gearboxes often have bronze selector forks and thrust washers which will be ruined. Other than this you are unlikely to do much harm using a slightly wrong grade of oil because modern oils are much more stable and just generally better lubricants than WW2 ones. David PS: SAE is the American Society of Automotive Engineers Edited January 9, 2015 by David Herbert Quote Link to comment Share on other sites More sharing options...
0 Pete Ashby Posted January 9, 2015 Share Posted January 9, 2015 Do a search on HMVF on this topic and you will find chapter and verse. Morris Oils are very good not cheap but you get what you pay for, I've used them in various applications and grades for over 20 years. Pete Quote Link to comment Share on other sites More sharing options...
0 paulbrook Posted January 9, 2015 Share Posted January 9, 2015 Depends on the truck...................... Quote Link to comment Share on other sites More sharing options...
0 Sean N Posted January 9, 2015 Share Posted January 9, 2015 Jules, to echo Paul, do you have the manual(s) for the truck(s) in question? Should specify oils and grades in that. Quote Link to comment Share on other sites More sharing options...
0 thedawnpatrol Posted January 9, 2015 Author Share Posted January 9, 2015 Jules, to echo Paul, do you have the manual(s) for the truck(s) in question? Should specify oils and grades in that. According to the Manual it says to use C600 in gear box, axles & steering box. 30HD in the engine So what are the Morris oil equivolant ? Jules Quote Link to comment Share on other sites More sharing options...
0 Degsy Posted January 9, 2015 Share Posted January 9, 2015 AG140 is the equivalent to C600 and Morris's straight 30 for the engine. Quote Link to comment Share on other sites More sharing options...
0 thedawnpatrol Posted January 9, 2015 Author Share Posted January 9, 2015 AG140 is the equivalent to C600 and Morris's straight 30 for the engine. Thanks Degsy Jules Quote Link to comment Share on other sites More sharing options...
0 paulbrook Posted January 10, 2015 Share Posted January 10, 2015 I can recommend Smith and Allen (http://www.smithandallan.com/) for both; delivered to your door. Quote Link to comment Share on other sites More sharing options...
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thedawnpatrol
So, what are the recommended oils to use in a 1940's British truck transmission system ?
I have looked on the Morris Lubricants website and they offer :-
Golden Film AG90, AG140 and AG250, they all say the same, but are they ?
what do you use ?
cheers
Jules
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