I use to put it in the dampers on side draft SU carburetors. They called for a light machine oil best as I can remember.
it would work for that, although working with Volvos and MGs from back in the 60s and early 70s...SU Carbs called for ATF in the dash pots....
to get higher performance tho, 20W50 in them was used by a lot of guys...friend who raced an MGB showed me that.... tried it in my 68 Volvo wagon, and worked real wellin the mountains or high speed running in rural areas or on freeway.. not so much around town...
