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Remember though that the automatic engine uses oil pressure to work the gears and therefore needs regular oil and filter changes, more so than the manual engine.
A fully carbon fiber Mini Marcos shell weighs just 7.25kg.
The recommended oil grade for autos was 15w40 mineral oil when they were brought out first which is what I use in mine but 20w50 was recommended later in production and works fine as well.If you can get it then Duckhams oil is the one to use plus it's a nice green colour and has a lovely smell too.For long auto life,oil change every 1500 and oil and filter every 3000.