Thoughts On Royal Purple Oil?

[MastuhWaffles]

I'm changing my transmission fluid and filter tomorrow and I decided to change my oil as well. Royal Purple was on sale so I picked some up, and I got a K & N filter too. Has anyone else run Royal Purple? Is it good stuff?

 

[JohnnyO]

RP is very good stuff and good for at least 7500 miles in most applications. It's pricey though, I would only buy it if it is on sale.
I get used oil analysis done occasionally on all our cars. I never tried RP but the lab results I've got from Pennzoil Platinum, about $25 at Wal-Mart, are as good as oil gets.

 

[MastuhWaffles]

RP is very good stuff and good for at least 7500 miles in most applications. It's pricey though, I would only buy it if it is on sale.
I get used oil analysis done occasionally on all our cars. I never tried RP but the lab results I've got from Pennzoil Platinum, about $25 at Wal-Mart, are as good as oil gets.

Yeah I got it on sale, I figured I'd give it a try.

 

[Ozwynn]

best stuff there is. I used it on 6 different 900,000+ mile 12.7L series 60 Detroit diesels and with bypass filtration I was able to kick the oil drain interval to 100,000 miles from 20,000.

 

[OilPatch197]

NOT A FAN.

Put some Royal Purple 80w90 gear oil in a Ranger 5 spd transmission. Had to drop the transmission to replace slave cylinder, so I drained the oil, it come pouring out like water, it sheered that fast. The truck might have had 40k miles on that oil.

I was disappointed, being so expensive, but the RP did give me better MPG and cold winter shifts!

 

[Ozwynn]

what transmission do you have that you were using 80w-90?


I ran RP 80w-90 in eton/fuller 10, 13, and 18 speed transmissions as well as 80w-90 in both differentials and at 50,000 miles still flowed like gear oil

 

[MastuhWaffles]

Well for the transmission I'm sticking with castrol mercon v.

 

[Mark_88]

It kinda tastes like grapes, but not sure...

 

[MastuhWaffles]

It kinda tastes like grapes, but not sure...

It's just grape juice for your vehicle.
It defiantly sounds like my truck is running a bit better since I put that stuff in. I also changed the trans fluid and filter today, and it made a big difference, now my truck shifts smooth and doesn't lag.

 

[Ozwynn]

Well for the transmission I'm sticking with castrol mercon v.

I wouldn't run 80w-90 in an M5od-r1

 

[JohnnyO]

NOT A FAN.

Put some Royal Purple 80w90 gear oil in a Ranger 5 spd transmission. Had to drop the transmission to replace slave cylinder, so I drained the oil, it come pouring out like water, it sheered that fast. The truck might have had 40k miles on that oil.

I wouldn't run 80w-90 in an M5od-r1

AFAIK Ranger manual trannys and all late-model Ford manuals call for Mercon ATF (not Mercon V). I usually use Mobil 1 ATF in my t-case and the 5 speed in my son's Mustang although for shits and giggles we put Redline D4 in them the last time. It shifts a little better with the Redline although it doesn't like cold weather but we hardly drive it in the winter anyway. I surfed the Internets a little before I got the Redline and the dudes on the BWM boards swear by it.

 

[OilPatch197]

what transmission do you have that you were using 80w-90?


I ran RP 80w-90 in eton/fuller 10, 13, and 18 speed transmissions as well as 80w-90 in both differentials and at 50,000 miles still flowed like gear oil

The rule for the older manuals is if it doesnt have a bottom removeable pan, atf is the way to go, if there is a removeable metal pan it takes gear oil. The repair manual says up to 87 to use 80w.

I believe it was a Mitsubishi was used back then(they made a 4spd as well), the rest you are clueless, putting gear oil in a M5' is retarded.

 

[Ozwynn]

the rest you are clueless, putting gear oil in a M5' is retarded.

???

 

[MastuhWaffles]

My transmission is a 5R55E and the manual said it needs mercon v.

 

[Rowdy Fitzgerald]

And gear oil in arranger/bronco trans comes up again! Lmao