Fullyield

Depends on where you live.

garthg

The 908 is $1,288 on the Autel store, twice what I paid for the 808, and I don't think that model was available when I bought. I think the next step up was the Maxisys.
The 808 does everything I need right now, including shutting the annoying service reminder and works on our other cars. It seems that it's come down another $100 since I bought it.

garthg

I'm a lawyer. I used to represent car dealers in Lemon Law claims.
A denial of warranty is not going to hold up because you didn't use a specific oil that's only available mail order or from some European brands that aren't sold here.
And besides, it's much more likely that a warranty claim will be related to something other than engine internals.
I really don't think the difference between A40 and C40 is significant for a non-DPF equipped car.

garthg

The A40 version is $49 for ten quarts.
Do you really believe the C40 version is necessary and worth twice the price? I don't.

Icegrill

For some strange reason Porsche does…I’m sure it’s just a conspiracy though. Do a black stone report to compare using the approved oil next change.

Red992

For whatever reason, maybe not even oil related, if you need a new engine under warranty and you were using A40 instead of C40 Porsche is going to tell you to take a hike. Good luck fighting it. And the C40 spec is not some wild unavailable spec. I'm no lawyer but have 40 years experience on the industrial side and have been in many meeting with huge corporations regarding machinery warranties. If you don't follow their service schedule to the letter and use their required spec'd lubricants, they have no obligation to honor their warranty. I'm sure Porsche is no different. Why take the chance?

Fullyield

I understand the Magnuson Moss Warranty Act as well as anyone else. I understand causation too. But, that is exactly why I suggested you first research LSPI before forming an opinion. The science clearly shows that the high calcium detergent level in the A40 oil formulation makes the an DI turbo engine more susceptible to LSPI which, if it occurs, can blow a hole in a piston and ruin an engine. The PDK in normal mode contributes also. If that happens, no warranty because your A40 unapproved oil contributed to cause it…..per Porsche engineers….and their argument is supported by the science.. The C40 formula was specifically designed to reduce detergents and the risk of LSPI to mitigate the issue. Search YT for LSPI. Lake Speed is a recognized expert. I think his YT channel is “The Motor Oil Geek”. It’s your car and your decision ……but educate yourself then do what you want……but do the research before you decide. So, yes, I do think there is a significant scientific and engineering difference between A40 and C40 oil for non-DPF cars. I personally won’t risk it for an additional $20 per oil change?

Fullyield

C40 oil is readily available here at about $9 a liter. Not as cheap as A40 oil at WalMart which is about $6 a quart post COVID. Is the extra $24 per 8 quart oil change worth the added risk of LSPI and a warranty denial on a $40,000 engine replacement? Each owner can decide…..just make a fully informed decision.

dudeoverthere

I also put in the recommended fuel. Have a bottle of recommended coolant, G40, on the shelf. Will be using the recommended brake fluid etc.

I also drink 5$ lattes so take my approach with a grain of salt.

garthg

garthg

"C40 oil is readily available here at about $9 a liter."
Like I said, mail order.

And if one uses Havoline, or Techron, Castrol, Shell or even Kirkland, instead of ExxonMobil they're going to deny a warranty claim?
I don't think so.
Porsche also recommends 10,000 mile oil change intervals, which no one here seems to abide (except in Europe). So I guess it is okay to pick and choose recommendations.
With regard to coolant and brake fluid, I agree with not mixing types, but there is more than one brand of G40, and Dot 4 is readily available.

Red992

If you really are a lawyer specializing in lemon laws, I'm sure you've heard of the Magnuson-Moss warranty act. In a nutshell it claims a mfg cannot specify a brand name product (oil in this case) over another equivalent brand name. Brand name being the key word here. Porsche only recommends Mobil 1. They do not require it. What they require is a specific spec. By all means go ahead and use whatever brand you want, as long as it is the correct spec.

Fullyield

I wish I was in a position where I had more money than sense. Your car.....your call.

Secret Engine Killer - LSPI Causes and Prevention

Fullyield

Ahhh Yes.... the emotional lawyer response! Nice suit.

drcollie

Here's a chart of Porsche C40 oils from NHTSA

​​​​​​https://static.nhtsa.gov/odi/tsbs/20...32392-0001.pdf

(I run Liquid Moly in mine its easy to order everything fro Pelican Parts)

You know Penske owns 3,200 dealerships, and many of them are Porsche stores. Know what oil they use? Pennzoil, in all their oil service as Penske has a relationship with Pennzoil. Far as I can tell, there are no C40 spec in any of the Pennzoil products.