Lubriplate also makes the 600W gear lube, the call it SPO299. It also does not contain sulphur which will eat away brass busing used in our transmissions. Just get the right stuff. As for engine oil, a good 10W30 is all you need.
There are many posts here on the subject. A year ago when I joined I found the searched posts to be quite useful. My 28 is now very well and properly lubed, thanks to VCCA.
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It's not how fast you can go, but how good you look at 20 MPH.