R50/53 R53 motor oil: "Royal Purple" Vs. "Mobil 1"
I usually limit myself to 6 beers if I'm going to be on the Internetz. 
May want to break-up your different um "questions" and file them in separate (and more specific places). https://www.northamericanmotoring.co...play.php?f=196 is a good place for engine and transmission modding questions.

May want to break-up your different um "questions" and file them in separate (and more specific places). https://www.northamericanmotoring.co...play.php?f=196 is a good place for engine and transmission modding questions.
P.......U.........I...........
No sweat changing from RP to Mobile One and JCW's are great, if you want alittle more put a little smaller pulley on it and leave the intake alone.
PSish: Then get a Jan Tune.
No sweat changing from RP to Mobile One and JCW's are great, if you want alittle more put a little smaller pulley on it and leave the intake alone.Last edited by minimarks; Jul 30, 2008 at 07:16 PM.
That intake is for a regular Cooper (JustaCooper), not an "S".
Keep your JCW...it's gooood.
I'd keep the Royal Purple running, but that's just me. Nothing wrong with Mobil 1...or switching between them.
UHP's are the king of budget tires. If you ever want something with a little more grip, try Falken Rt615's or Hankook Ventus RS-2's
Keep your JCW...it's gooood.
I'd keep the Royal Purple running, but that's just me. Nothing wrong with Mobil 1...or switching between them.
UHP's are the king of budget tires. If you ever want something with a little more grip, try Falken Rt615's or Hankook Ventus RS-2's
That intake is for a regular Cooper (JustaCooper), not an "S".
Keep your JCW...it's gooood.
I'd keep the Royal Purple running, but that's just me. Nothing wrong with Mobil 1...or switching between them.
UHP's are the king of budget tires. If you ever want something with a little more grip, try Falken Rt615's or Hankook Ventus RS-2's
Keep your JCW...it's gooood.
I'd keep the Royal Purple running, but that's just me. Nothing wrong with Mobil 1...or switching between them.
UHP's are the king of budget tires. If you ever want something with a little more grip, try Falken Rt615's or Hankook Ventus RS-2's
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Me personally I would stick with the RP. But I've always ran it and it has dyno proven results of more power. I've never seen the results on the internet, but I have in person on more than 1 occasion.
I used to proclaim M1 to the high heavens but after reading how the API changed their rating involving synthetics, I think I may try RP or stick with my RedLine I currently have. The American Petrolium Institute supposedly lowered their requirement to be considered a "full synthetic". So what does M1 do? They lower the quality of the oil.
Now granted, this is going off what I read posted in here (I think, or was it the Subie forum?) a little while ago concerning oil.
Now granted, this is going off what I read posted in here (I think, or was it the Subie forum?) a little while ago concerning oil.
Search around the oil threads and you'll find this and more.
There is a thread around on oil analysis that has Robin Casady (perhaps?) reporting on his series of tests. His oil lab analyst likes RP and BioSyn based on what he sees in his lab tests from all sorts of vehicles. BioSyn is his first choice, but he told me that RP was excellent, also. He thought it was worthwhile getting away from M1.
Search around the oil threads and you'll find this and more.
Search around the oil threads and you'll find this and more.
here's another one too http://www.nolimitmotorsport.com/royalpurple/dyno.html
here's another one too http://www.nolimitmotorsport.com/royalpurple/dyno.html
I wonder if this website is sponsored by RP just like a lot of the other "tests" done by magazines and other websites are.

I have stock shift linkage and OEM blue leather **** and boot.
I've been using Mobil 1 since the car was new, I see no reason to change.





