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Old 07-17-2008, 12:49 AM   #1
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Question Engine Oil Question

Is this Royal Purple Stuff as good as it says it is? Is it really worth the 6-7 dollars per quart?
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Old 07-17-2008, 07:25 AM   #2
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Re: Engine Oil Question

i will not run royal purple, ive found the gear fluid makes rearend clutches slip, & my tremec 3650 ate syncros when i put it in there....so i dont trust it in anything else.
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Old 07-17-2008, 07:49 AM   #3
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Re: Engine Oil Question

Its really good, every article ive read where independent studies are done it seems to come out on top. I have also heard some people have issues with it and such. For me I just use Mobile 1 full synthetic
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Old 07-17-2008, 08:07 AM   #4
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Re: Engine Oil Question

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Originally Posted by SpectorV View Post
Its really good, every article ive read where independent studies are done it seems to come out on top. I have also heard some people have issues with it and such. For me I just use Mobile 1 full synthetic

mobile 1 is great, i use castrol synthetic.but i used to use mobile 1
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Old 07-17-2008, 10:45 AM   #5
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Re: Engine Oil Question

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mobile 1 is great, i use castrol synthetic.but i used to use mobile 1
Thank you but my I ask why did you switsh from mobil to castrol? And is full synthetic really as good as everyone says it is?
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Old 07-17-2008, 11:06 AM   #6
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Re: Engine Oil Question

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Thank you but my I ask why did you switsh from mobil to castrol? And is full synthetic really as good as everyone says it is?
no particular reason, the shop i work at stocks castrol and when i put my new motor in, i just poured what we had in stock in it, i approve of castrol or mobile 1, but once i use an oil on an engine, i dont switch to another brand.

what ive been told about the royal purple,particular the thin ones like 5w-20, is that it is so slick that it doesent create the film on the bearings and cylider walls because it doesentstick as much, kinda like putting water on a freshly waxed car, it doesent stay covering the whole surface, it beads and runs down.i cant see that being good for a piston ring.
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Old 07-17-2008, 11:21 AM   #7
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Re: Engine Oil Question

Okay thank you very much!!!!!
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