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Well al, I did the change to Rotella T6 last night and the engine does feel a bit more cushioned than before. I do now think that Royal Purple is a bit thin for my engine. It just seems to feel a bit smoother, and less clacky. I will wait to get my UAI check before my final feelings will be...

I have noticed two completely different types of Rotella T6 5w-40 jugs at the WalMart near my home. One looks like its older or something and the other is definitely newr in design. Is there a difference in these? Maybe one being the older formula or something like that? Any hel would be great...

Well I am a bit on the fence on the oil I am using . I have been using Royal Purple 5w-30 for several years now and have had good luck so far. BUT I have always liked Rotella and have used it in the past. I am very interested in the Rotella T6 5w-40 for my truck (Toyota tacoma 2008). So what do...

I have a shop that used to be owned by my Father in Law who ran a Brokerage Company. I was looking around for an oil pumper and found a 5 gallon bucket of 75-140 Shell gear oil, the bucket is yellow and the oil looks very clean and is new. It may be 10 years old though, would it be ok to use...

What negative effects would occur if you put too much LSD additive in your diff? I was thinking of adding more to avoid chattering in the future, but do not want to ruin my Limited Slip or anything else. So would adding more help in any way? Is there too much and if so would that be say double...

I am getting ready to change the rear diff fluid in my truck. I want to use Royal Purple but I am not sure if I can use the trans X LSD additive. Does anyone know if this will negatively effect the oil? Many thanks!

First off I am new here and love it. I have been into lubricaation as long as I have cars/Jeeps/Trucks, but in the last few years I have gotten more and more into it, its gotten to be an obsession. I was hoping some of you can sterr me to some more information about Royal Purple thinning? I...