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Aug 06, 2015 9:53 am
Aug 06, 2015 9:53 am
Subject: LG6 rear axle oil (same as LG45?)
I wonder what the current thinking on appropriate oil to use is. I'm trying to get my LG6 back on the road for the AGM. Yesterday I spotted a drip from the rear axle drain plug, which turned out to be 2 or 3 turns loose. The axle was rebuilt and re-installed in the car by a well known Lagonda specialist about 7 years ago, so I hope that is the only oversight he committed! I doubt there's any oil in the axle now, just as well I checked.
Anyway, the club issued "Revised (1998) Handbook" states use SAE120. I thought the usual options are 80, 90 and 140 but guess one can mix appropriately. Strangely, the original handbook recommends hypoid oils; yet the axle is spiral bevel, not hypoid.
So, what are people using today? I use a synthetic 90 grade oil in my Peugeot CTi, which is not thick and gloopy but quite runny. This seems to work very well. Presumably its thinner consistency enables better lubrication of bearings and reaches places thicker oil might struggle to. The star gears and pins had to be renewed on this axle precisely because lubrication to them is poor. Less drag as well. Any thoughts?! To clarify, I mean synthetic (not 90), presumably I'd use or mix a synthetic 120 grade for the LG6.
Laurence
I wonder what the current thinking on appropriate oil to use is. I'm trying to get my LG6 back on the road for the AGM. Yesterday I spotted a drip from the rear axle drain plug, which turned out to be 2 or 3 turns loose. The axle was rebuilt and re-installed in the car by a well known Lagonda specialist about 7 years ago, so I hope that is the only oversight he committed! I doubt there's any oil in the axle now, just as well I checked.
Anyway, the club issued "Revised (1998) Handbook" states use SAE120. I thought the usual options are 80, 90 and 140 but guess one can mix appropriately. Strangely, the original handbook recommends hypoid oils; yet the axle is spiral bevel, not hypoid.
So, what are people using today? I use a synthetic 90 grade oil in my Peugeot CTi, which is not thick and gloopy but quite runny. This seems to work very well. Presumably its thinner consistency enables better lubrication of bearings and reaches places thicker oil might struggle to. The star gears and pins had to be renewed on this axle precisely because lubrication to them is poor. Less drag as well. Any thoughts?! To clarify, I mean synthetic (not 90), presumably I'd use or mix a synthetic 120 grade for the LG6.
Laurence