A Redline Rep came on the forum a while back to explain they are both the same. Buy the Redline V-twin Transmission oil. I buy mine from racerpartswholesale last I bought was 12.95 a quart .
Yesterday, I just put in 1 QT of Redline Vtwin, 6 cylinder Shockproof. Did my 10K service, or at least the fluid part of it. I will do the rest this weekend.
Yes, but doesn't VTwin tranny oil and Shockproof Heavy have a strong smell? This is the only reason I haven't tried them yet.
Beary
Absolutely Beary, I have to open up the garage doors and turn on my floor fan when I change the Tranny oil....smell's like nothing I've ever smelled before. Glad I only have to change it every 20K.