My truck might be a bit heavier than yours. Also, that 100 wt oil is probably ~900cts."thumbsup"
I've got the SCX aluminum scaler shocks on my build and Ryan(IttyBitty) told me heavy oil. All I had on hand was some good ole Hydrualic oil. My knuckle weights that I made are close to 1lb a piece. Do you think that is to much?