Ah, Thanks Great info. sota.. That's good for all to know... I'm sure their great, I've bought and used OME's before, I just felt like Tom was pushing a sale of them... I totally understand, and IF that's the route I decide to go I'll be sure to get the OME's again. One thing I noticed with my past OME springs was that the black coating/paint had peeled off and the all look/are very rusty. Maybe the snow /salt from around here/and the the plowing. Also part of the deciding factor is I don't want a stiff bouncy ride for the other 90% of the time the truck will be driven as my other past trucks have been. I'm trying to change my gear oil order now to 75w-90 instead of the 140.... The 140 is if your towing - most likely in the heat too. The 75w90 is what's listed to cover ALL temps Differential, Rear W/ 8.25 RBI W/ TT......GL-5 All TEMPS......75W-140  Severe Gear® 75W-140 (SVOPK) Differential, Rear W/ 8.25 RBI W/O TT......GL-5 All TEMPS......75W-90 Severe Gear® 75W-90 (SVGPK) 75W-90 Long Life Synthetic Gear Lube (FGRQT) Severe Gear® 75W-110 (SVTQT) Differential, Front......GL-5 All TEMPS......80W-90  SAE 80W-90 Synthetic Gear Lube (AGLQT) Severe Gear® 75W-90 (SVGPK) Severe Gear® 75W-110 (SVTQT) .