sae 30 hd oil

alf1

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2 May 2006
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I am trying to get some sae 30 hd oil for me gearbox without success I can get sae 30 sa i beleive the differance is hd is heavy duty and sa light duty.Is the sa ok and were can i ger hd oil if it is not ok.
 
If this is for a Self Changing Gears, hydraulic gearbox, then classic SAE 30 (no detergent) is OK. I get mine from the local motor factors.
 
FWIW I changed the oil in a Twin Disk MG506 (VP Engine)some time ago and the manufacturer was very insisistant that I used the correct oil spec which I am sure was SAE30CD. I put in ordinary SAE30 (from Halfords - Garden machinary oil) and was advised to remove it and replace with SAE30CD which I did. Thought I would mention this as gearboxes ain't cheap!
 
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