Mobil One Suitable for Boxsters? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Tool Pants · 08-14-2005, 08:14 PM

I don't use Mobil 1 because it smokes too much at high temps. Peanut oil is better.

Here is the list for the world.

http://home.jps.net/~mjlopez/images/Box%20oil%20world%207-9-04.pdf

Rail26 · 08-15-2005, 05:04 AM

I am now using the gold cap Mobil 1. My engine hasn't blown up yet so it must be good and at 5.30 clams a quart, it should be.

Good call on the peanut oil...has anyone modded for the Mr. Fusion?

deliriousga · 08-15-2005, 05:28 AM

I use Mobil1 and nothing but. Even in the Dodge. It's recommended by Porsche, BMW & many others. I've never had burn off of Mobil 1 in the Boxster. In 6 oil changes, the level has never gone down between changes.

Mobil1 and the large amount of it is what allows the Boxster to have such long maintenance schedules.

RandallNeighbour · 08-15-2005, 06:14 AM

This may be a little off-topic, but you mechanical engineers out there will love answering it!

Not that I'd ever do it, but what would (or could possibly) happen to my Boxster's engine if I ran mineral-based oil in it versus the synthetic oil?

I've always wondered about this.

Brucelee · 08-15-2005, 06:40 AM

You would be fine as long as you changed it very frequently. DINO degrades very quickly as compared with SYN oil, say a change per 5K vs 15K as recommened for the 986.

Also, your engine would run hotter and you gas mileage would decrease say 1-2 MPG. As the oil got older viscosity would vary greatly also from as new.

Basically, DINO sucks when compared to the alternative.

Tool Pants · 08-15-2005, 08:26 AM

Quote:

Originally Posted by RandallNeighbour

This may be a little off-topic, but you mechanical engineers out there will love answering it!

Not that I'd ever do it, but what would (or could possibly) happen to my Boxster's engine if I ran mineral-based oil in it versus the synthetic oil?

I've always wondered about this.

Up until around 2000 Porsche did approve several conventional mineral oils for the Boxster. Then they were taken off the list as were some synthetics that had been approved.

Brucelee · 12-26-2005, 06:26 AM

Quote:

Originally Posted by Tool Pants

Up until around 2000 Porsche did approve several conventional mineral oils for the Boxster. Then they were taken off the list as were some synthetics that had been approved.

Nothing bad would happen under normal cirumstances and over the initial miles of its use.

However, conventional oil would soon start to degrade and by say 5000 miles would not be doing a very good job of protecting your oil. It would be more than time to change the oil.

Of course, with syn, you can get many more miles per change.