Redline ShockProof Heavy is the same Vtwin Tranny Lube Oil
Bottled/labeled different is all to capture the V-Twin Crowd...
Both the same product...
I do get a kick out of many of you that think you need to change out Redline Shockproof OFTEN :newsmile100:
Harley changed the drain interval to 20,000 miles long while back and that was using THEIR stuff...
I just change my Redline Shockproof today... I changed it EARLY
17,000 miles

instead of 20,000 like last time...:small3d019:
I have the 09 FLHR 6 speed and have Short of 90,000 TROUBLE FREE MILES on it... I used Redline SP Heavy right off the show room floor...
The HD Dealer asked me what oil I used when I bought that bike.. ALL Redline products Was my reply... LOL he said
SO do I... So, It came with Shockproof in the tranny and MTL in the primary (same as Redline Vtwin Primary Lube) Says so on the bottle...
Used HD 360 20/50 Dino oil for the engine break in though...
Now just suggesting: go more than a 5,000 mile oil change with it in the tranny... YES the gears do CHOMP at the molecular components in the oil.... SHEAR it is called... The engineer over at redline told me that it would do well and last 40,000 miles BUT said to follow
HD's suggested drain intervals of 20,000 miles..
MANY bikes over the years and NEVER EVER any tranny troubles NEVER...
NO Metal of any kind on the magnetic plugs NEVER
I have used Shockproof when most of you were just thinking HD....:newsmile100:
NO I don't get paid from Redline but I should... I called them once and asked for a little for FREE for all the PUSH I do... :newsmile100:
I ONLY suggest Redline Products as They WORK... The best I have ever used... And For You NEW Guys and Gals, please take my Word on it... Try it but don't Drain it Early (shockproof heavy) Go the Limit,,,It Will go there also...
Living in a real Cold Climate ? they make light weight shockproof also...
Enough for now...
Noticed I posted in this thread before... just ADDED another...
Probably says the same thing...? I have to go read it...:rofl
signed....BUBBIE