HI! I'm new to these forums and have searched around quite a bit in the series forums and have learned a ton.

I recently purchased a 1955 series one 86" and am very happy with my decision to do so.

So...my question is this: What type/grade of oil goes into the gearbox?

would this work?: Lucas Heavy Duty 85/140 Gear Oil

would regular motor oil work? (just out of curiousity)

or is there some other type of special gearbox oil that is eluding me?

I just want to be sure I'm pouring the right things into the right places.

Thanks in advance!