[TR] Rear axle oil

John Macartney johnbmacartney at gmx.com
Thu May 7 15:29:54 MDT 2026


Had an early night after spending the day sorting old Standard-Triumph handbooks (among lots of other stuff) and have just checked the grade for Standard Vanguard and TR3/3A as both used the same axle. Factory recommended an 85W90 GL4 type Hypoy as offered by Shell, BP, Castrol, Duckhams, Texaco. IOW, a hyper lube type with an ultra high resistance to shear. Does the stuff you have offer the same lubricity properties? Never heard of it myself but most modern oils are a complete mystery to me anyway. Still can’t get used to the family daily driver only being allowed a 0w20 full synthetic. Pours like water!

Jonmac


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