Bud Taylor

Im interested as well. For warranty is motul Porsche approved?

Charles Navarro

Far and few between still. The reason I believe we don't see as many failed 9A1 blocks is that cheap factory crate engines were available up until sometime last year (at least for Caymans) and shortblocks are still very inexpensive, making the dealership still an attractive option compared to rebuilding the engine yourself.

The first one we fixed was in 2011 - a 2009 C4S from Kuwait:





Sorry I don't have better pics - these were the ones the customer sent me years ago.

Charles Navarro

Motul 8100 X-Cess 5w40 is still a factory approved A40 oil that is full SAPS.

limegreen

I will never understand why Mobil 1 is constantly bashed and blamed at least partially for many of these Porsche engine maladies yet Porsche continues to use it as factory fill and has done so for over 20 years.

If it was truly as inferior as some believe then Porsche wouldn’t be using it period.

Charles Navarro

Mobil 1 is great for fuel economy and horsepower. It's hard to find an oil that will beat it in those two areas. That's two reasons why.

titan7

So this is the best option, ok I gues I will try it at the next change.

Motul 8100 X-Cess 5w40

Charles Navarro

Many over on the Cayenne forums swear by Liqui-Moly and their Ceratec additive.

Norge911

dont idle car, especially when cold and extra fuel is injected. Start car and start driving with low rpm

Tampa991

I use this oil:


https://www.fcpeuro.com/products/por...kit-ox254d4eco

Cman21

Can you please tell us about the new Driven Brands DI 40 Oil .

Thanks, Cman21

Charles Navarro

I'll explain the main differences between DT40 and DI40. DI40 has a bit higher HTHS to help fight fuel dilution even though it's a 0w40 rather than the 5w40 of the DT40. It has similar levels of ZDDP making them full SAPS oils, however the detergent package is completely different between the two. DI40 has significantly less Ca detergent, as Ca and Na both contribute to LSPI.

I liken the difference to the A40 M1 and C40 M1. The C40 is formulated to prevent LSPI and also has a higher HTHS viscosity, however that's where the similarity ends, as the C40 is designed as an emissions protection formula and by that token, can't be full SAPS.

TAch Miami

The label recommending Mobil-1 is not based on oil performance but how much the Exxon advertising department pays to have Porsche and other manufacturers put the label on their cars. Some owners believe Mobil-1 is the sacred cow of oils and use it despite there being a long list of Porsche approved oils by other manufacturers. Replaced engines under warranty is chump change compared to what Porsche gets paid by Exxon.

cpbmd

I am going to do the exact same thing. I found Motule oil on Amazon which I ordered.
My car is 2013 Carrera S. I just changed oil last week.

Airbag997

^^This. It's all about the $$$, not the performance. Mobil 1 has gone downhill, go back 10-12 years, they used better base stocks. Now it's just garbage. Castrol is superior to Mobil 1 these days.

limegreen

And this is exactly the point I was trying to make. This is also exactly how a forum wildfire begins..... "WARNING, DRAIN THE GARBAGE MOBIL 1 FROM YOUR 991 OR ELSE!!!!"

One could just as easily say that Motul, Driven , Liqui Moly etc. etc. have their own marketing agenda and campaign to dethrone Mobil 1 in order to make room for their products in a somewhat cornered market.

Porsche has placed it's reputation on Mobil 1 for decades and it's insane to think for a second that they would risk that for the sake of some kick back. As far as I know there is ZERO evidence that Mobil 1 is causing any early or abnormal engine wear in street driven vehicles and the speculation otherwise should be looked at with far greater scrutiny.