Porsche Approved Oil List

[Brucelee]

I used to use M1 exclusively in all my vehicles. Then, they started to get cagey about whether they really were selling a true syn oil. Many (including me) believe they now sell a hydro-cracked version under the M1 brand, rather than the Group 4 formula they had been selling.

Hence, I moved to Red Line.

Who knows the truth or if there is a "truth."

[ChefCarnivore]

I seems like the oil for a 97 boxster has been a moving target as forulations change. What would be the present recommendation for a 97 boxster with 100,000 miles on it?
This would be the first oil change since I bought it.

Thanks for all who respond.

[JFP in PA]

Originally Posted by ChefCarnivore

I seems like the oil for a 97 boxster has been a moving target as forulations change. What would be the present recommendation for a 97 boxster with 100,000 miles on it?
This would be the first oil change since I bought it.

Thanks for all who respond.

Consider a quality 10W-40 full synthetic with ACEA A3, B3, B4 ratings like Castrol Syntec.

[Bob O]

I'm also currently using Castrol 5W40 (in an 01 base with 65K on it). I change somewhere between every 5000 and 7500 miles and take it to the track several times a year.

JFP....Would you recommend year round Castrol 10w40 for a car that gets regularly driven in the winter in temps sometimes below O deg F (excluding this last mild winter). Based on your recommendation above my next change (next month) will probably be Castrol 10w40, so I'm curious if I should continue to use it during the winter or go to the 5w40 for the cold weather.

Thanks

Bob

[JFP in PA]

Originally Posted by Bob O

I'm also currently using Castrol 5W40 (in an 01 base with 65K on it). I change somewhere between every 5000 and 7500 miles and take it to the track several times a year.

JFP....Would you recommend year round Castrol 10w40 for a car that gets regularly driven in the winter in temps sometimes below O deg F (excluding this last mild winter). Based on your recommendation above my next change (next month) will probably be Castrol 10w40, so I'm curious if I should continue to use it during the winter or go to the 5w40 for the cold weather.

Thanks

Bob

We use 10W-40 year round, and it gets plenty cold here in PA in the winter. If you go to Castrol's website, their tech specs for the 5W and 10W oils are not all that different in the cold; so unless you are going to see sustained -25F (or worse), I wouldn't worry about it.

[Sputter]

I'm curious why 10w over 5w? IIRC, (i don't have my list in front of me), 5w40 made the Oil TSB but not 10w. The 05w40 syntec is being processed for approval. I'm assuming they made a change to it?

Jim

Originally Posted by JFP in PA

We use 10W-40 year round, and it gets plenty cold here in PA in the winter. If you go to Castrol's website, their tech specs for the 5W and 10W oils are not all that different in the cold; so unless you are going to see sustained -25F (or worse), I wouldn't worry about it.

[JFP in PA]

Originally Posted by Sputter

I'm curious why 10w over 5w? IIRC, (i don't have my list in front of me), 5w40 made the Oil TSB but not 10w. The 05w40 syntec is being processed for approval. I'm assuming they made a change to it?

Jim

Simple:

• We tried both weights and liked the overall performance and UOA's for the 10W-40 better (parameters like TBN, etc.)

• We also learned to ignore the oil TSB/"approved lists" as there are products that they "approve" which are nearly impossible to obtain, and others that simply do not hold up well, and the basis of what is "approved" and what isn't is suspect..........

Our focus is on what works and keeps the M96 alive, not what Porsche recommends……….

[JFP in PA]

Originally Posted by Brucelee

I used to use M1 exclusively in all my vehicles. Then, they started to get cagey about whether they really were selling a true syn oil. Many (including me) believe they now sell a hydro-cracked version under the M1 brand, rather than the Group 4 formula they had been selling.

Hence, I moved to Red Line.

Who knows the truth or if there is a "truth."

Major draw back I have with Red Line oils is their lack of ACEA ratings (I've learned not to trust API since it switched from being a specification watchdog to a public relations arm of the industry); although I'll give Red Line credit for admitting it, unlike other brands such as RP, who have gotten caught more than once playing games with what ratings they hold...............

[941MXVET]

Originally Posted by JFP in PA

Major draw back I have with Red Line oils is their lack of ACEA ratings (I've learned not to trust API since it switched from being a specification watchdog to a public relations arm of the industry); although I'll give Red Line credit for admitting it, unlike other brands such as RP, who have gotten caught more than once playing games with what ratings they hold...............

I'm currently switching most of my cars over to Redline. I don't think it's fiscally prudent for a small nieche oil company to pursue gov. ratings as I imagine the costs associated with obtaining the rating would out weigh the bennefit of having it.

[vath2001]

Originally Posted by 941MXVET

I'm currently switching most of my cars over to Redline. I don't think it's fiscally prudent for a small nieche oil company to pursue gov. ratings as I imagine the costs associated with obtaining the rating would out weigh the bennefit of having it.

Interesting point of view with regard to the Gov ratings. However, without the independent rating organization to verify the process and standards of the product ... Red Line is not held to anything... just their good name.

I am a believer in the Ratings.