Green Gear Oil GL1

Green Gear Oil, GL1 (SAE 90, SAE 140), provides the lowest level of performance and is suitable for vintage transmissions.  It is very similar to engine oil, having a very low additive content, but is available in much higher (thicker) viscosities to suit gearboxes with unsophisticated oil seals.  A GL1 oil is ideal for a vintage application that has a lot of yellow metals in the gearbox and differential, as it will be the closest to the original specification.

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