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Is anybody running Royal Purple Lube in there CTD and in there axles,transfere case? IS there a dealer locater on the internet, so i can find a store that sells it in Iowa?
Sorry I can't help you but you might try searching I'm sure you'll find someone that sell it.
The main reason I wrote & I hope I don't get flamed cuz I seen it on TV today were they changed all three fluids to Royal Purple & gained 8HP they showed b4 & after right on TV.
I could not find any auto parts store in my area that ever heard of it. When I looked it up on the internet, their dealer locator did not work. If the lube is as good as their web site and advertising I don't think I want it in my truck
As far as I know their 75w140 and 85w140 are less than Amsoil. I think the cost is about $8/quart and if I remember correctly the Amsoil series 2000 75w140 is ~$12.
I've been running RP in the engine for about a year now. I've had good oil analysis with it.
I can't get it locally either and used to mail order it from Carparts.com when they offered it at a discount. Through the RP web site and with a few phone calls I located the area rep. He'll deliver a 5 gallon bucket of 15w-40 directly to me at work when he comes through town for a little over $80 (as I remember).
I've been running Royal Purple for years in all four of my vehicles, including my Dodge truck. I don't know if it's any better than any other synthetic, but it's produced locally so I buy it.
I've been running RP Longrider Ultratech 15w40 in my engine for around 8000 miles now. I like it better than the dino oil I was using mainly because of our cold winters here. I did one analysis at 7000 miles and that was better than when I was using dino oils so I'm happy with it. Most of the Flying J stations carry it in a gallon jug. You can also get it shipped in a 5 gal pail.