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Old 09-09-2012, 09:24 AM   #1
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Question Royal Purple?

OK guys, I have read enough in here to feel pretty confident that full synthetic fluids are the way to go. Now, having said that, I ran only Royal Purple in my Toyota and never had any issues. I realize that different things tend to like different stuff, so what is the opinion here in Jeep World about Royal Purple. Also, my Jeep has just over 120K miles on original equipment. I had a guy recommend me not changing to synthetic with this many miles. His argument sounded like crap to me, but again, figured I would ask some of you guys for an opinion.

Thanks.

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Old 09-09-2012, 09:35 AM   #2
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There are a lot of opinions about synthetics; I like using the "if you like it, use it".

I would; Ive run synthetics for years, putting them in rigs with well over 100,000 miles. But mostly I do it for my own convenience. I run them much longer than conventional, just changing filters, and it makes me feel better in some instances because I feel they will offer a bit more protection than conventional.

Now I have however repaired a Peugeot transmission that got Royal Purple in it, and then shortly thereafter my daughter popped the clutch and destroyed it. Not really worth the extra $50 in oil when its allowed to pour out onto the parking lot.

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Old 09-09-2012, 10:32 AM   #3
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RP is a great product, however going to synthetics on a high milage may cause problems, disappears out the tail pipe, leaking seals ect
if you switch keep an eye on things
im a 30 yr vet in the auto repair industry and was sponsored by Royal Purpal back in the day
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Old 09-09-2012, 10:36 AM   #4
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Quote:
Originally Posted by Mike R View Post
RP is a great product, however going to synthetics on a high milage may cause problems, disappears out the tail pipe, leaking seals ect
if you switch keep an eye on things
im a 30 yr vet in the auto repair industry and was sponsored by Royal Purpal back in the day
My experience Ive had little to no difference, but some leaks did get a bit worse, but no extra burning.
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Old 09-10-2012, 06:16 AM   #5
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Thanks guys, that answered my question. I personally love the stuff. Heck, I even run it in my lawn mower. Figure what the heck, the thing only gets a oil change once a year, only holds just under 2 qts, runs wide open it's entire existence, why not use good oil. So now I guess the next question is this.

I live in Florida. It is hot most of the time, but does get cool in the winter. What viscosity do I need to run. 10w 30? From what I was reading here the 75w 90 gear oil is what to use in the trans. As for the transfer Case, do I use their ATF fluid, or is there some special type I need for that? Don't want to be a bother, but on the same note, I like to lean on experience and take care of my stuff.
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Old 09-10-2012, 09:39 AM   #6
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10w 30 should be fine, 75w 90 is what i would pick also. and for the transfer, dex II eqivalent.
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Old 09-10-2012, 09:58 AM   #7
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10-30 is fine for all seasons especially where you live.

I go a little thicker for higher mileage cars, like a 15-40 for summer, then back to a 10-30 for winter; but our winters are fairly cold in comparison.
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Old 09-10-2012, 06:38 PM   #8
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THanks guys, You are a big help. Love this forum!

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