Oil Change, Royal Purple - 986 Forum - The Community for Porsche Boxster & Cayman Owners

CJ_Boxster · 10-17-2006, 09:48 AM

I just got back from my fathers shop, I got my first oil change for my Boxster. I used 15w-40...I know I'm suppose to use 15-50 but royal purple doesnt make it...I should be fine.

But already after 20 miles, Im reeping the benefits. The idle is getting smoother with every mile i drive, the acceleration is more crisp, smooth & a tad quicker.

I had the same results using this oil in my Twin Turbo but I stopped using it cause the price for the oil was to high, But nothing is too expensive for my Boxster.

My Idle is SOOOOOO much better, I figure after about 500 miles that the idle should be so smooth that I wont be able to tell the engine is running just like in my 140,000 mile Twin Turbo.

I've witness some pretty amazing stuff with this oil in the past, One of my buddies turned me on to this oil when he showed me a before and after picture of his head on his newer prelude...With normal oil the cams, valve springs & all metal surface that oil touched looked like any other car,

But after 3000 miles with Royal Purple in his engine, He took off the valve cover again to replace a cover gasket and it was remarkable...The cam, valve springs and everything under the valve cover looked polished and whatever blackish residue that was on the oil soaked parts was now gone...

Does anyone have any experience using Royal Purple gear oil for there manual trans?

MNBoxster · 10-17-2006, 12:48 PM

Hi,

RP is good stuff, and for the price it better be. The same thing can be said for RedLine. They're both better than Penzoil, Gulf, Sunoco, Texaco, but so far as the engine is concerned, they're just on par with Mobil1, they're not some Mystery Elixer...

Happy Motoring!... Jim'99

CJ_Boxster · 10-17-2006, 01:21 PM

Quote:

Originally Posted by MNBoxster

Hi,

RP is good stuff, and for the price it better be. The same thing can be said for RedLine. They're both better than Penzoil, Gulf, Sunoco, Texaco, but so far as the engine is concerned, they're just on par with Mobil1, they're not some Mystery Elixer...

Happy Motoring!... Jim'99

Hey thanks for repling to my thread, What weight would you recommend for gear oil on my 100,000 mile original transmission??? I think i want to go with Royal Purple brand also.

10-17-2006, 01:24 PM

Quote:

Originally Posted by CJ_Boxster

Hey thanks for repling to my thread, What weight would you recommend for gear oil on my 100,000 mile original transmission??? I think i want to go with Royal Purple brand also.

Use this link & chart:

http://www.royalpurple.com/techa/tranxref.html

I think you would use the Max Gear 75W90.

CJ_Boxster · 10-17-2006, 01:38 PM

You are correct, i called the Royal Purple Co. and they told me 75w90 is the correct weight for my boxster.

10-17-2006, 01:39 PM

"There are two sections to these tappets. The center section and the out edges. As computer deems necessary based on load, TPS, RPM etc the cams will switch from 3mm lift to 10 mm lift. If you look at the picture above you will notice the 3 sections to each lobe. This is the equivalent of 2 cams in one. The sections of the tappet will drop out exposing the desired section to achieve a specific lift. At the same time the cams are also advancing from the sprocket on the nose of the intake cams. It is a very elaborate system that relies on oil to act as a hydraulic coupler. This is what activates and moves these items. Never use anything other than the weight the factory recommends." (http://www.imagineauto.com/996TTbuild.htm)

I believe this is variocamplus, but I personaly dont know. I just play it safe and keep it at factory weight. The Porsche engineers know more than I do.

CJ_Boxster · 10-17-2006, 01:56 PM

Does this apply to variocam plus only or both types?

blue2000s · 10-17-2006, 02:38 PM

Quote:

Originally Posted by MNBoxster

Hi,

RP is good stuff, and for the price it better be. The same thing can be said for RedLine. They're both better than Penzoil, Gulf, Sunoco, Texaco, but so far as the engine is concerned, they're just on par with Mobil1, they're not some Mystery Elixer...

Happy Motoring!... Jim'99

Only $6/quart if you order 5 gallons at a time.

http://www.karlracing.com/html/motor_oil.html

That's actually cheaper than what I've seen in Mobil 1.

pecivil · 10-17-2006, 02:53 PM

15-50 is too thick for your car.......Porsche recommends Mobil 1 0-40.

Here is a good (but long) read on motor oil written by a very knowledgable source.

Read it and you will learn a thing or two about motor oil, what the numbers mean

and why you want to use 0-40 for your porsche

http://63.240.161.99/motoroil/

CJ_Boxster · 10-17-2006, 02:59 PM

isnt 0-40 for cold climates? Its warm here in Southern California almost year-round. I used 15-40.

BTW that very loud embarrasing lifter tapping i would get once the engine is cooled is now gone...Now i just have the normal 1 second tapping noise once the engine is cooled, which is pretty quiet.

pecivil · 10-17-2006, 03:31 PM

no, 0-40 is not for cold climates. I would never use 15-50. It is much too thick, no matter where you are, or how hot is it outside.

read the articles in the link I gave below. Again, it is long, but if you can follow it, you will understand why 0-40 or even 0-30 is the better oil to use.

15-50 is needlessly increasing the amount of time that it takes the oil to reach operating temp at startup. This results in an increased time to achieve proper lubrication, and an increased time of extreme engine wear. All oils achieve the proper viscosity at operating temps.

The real variable is how long it takes the oil to get to proper temperature (i.e. to thin out) AT STARTUP.

the thicker the oil, the much, much longer it takes.

Anyway, on my boxster, there is a sticker on the trunk lid near the oil filler neck that clearly states "Use Mobil 1 0-40 ONLY"

10-17-2006, 12:52 PM

It seems like everyone on here has used redline. I watch all kinds of car shows and they seem to like both equally. So either way you go it should be fine. Just make sure you dont change weights if your car has variocamplus or something. I've been reading that imagine auto forum and the weight of the oil is specific to how your variocam works and stuff like that. But I dont think your car has that.

RandallNeighbour · 10-17-2006, 01:05 PM

Boggtown, our cars DO have variocam... they just don't have variocam plus, which is the new improved version. Did the threads discuss oil weight requirements of boxsters like ours with variocam, or was it the variocam plus only?

10-17-2006, 01:11 PM

I had my oil changed at the dealership last Friday, in preparations for winter storage. I supplied my own oil. I brought 9 quarts of Red Line 5W40.