Mobil 1 5w40

[geoff]

I've seen more and more posts here and elsewhere regarding Mobil 1 is good, Mobil 1 is bad, use 5w40 instead of 0w40, etc. Most posts degenerate into opinion, speculation, ignorance or worse. So I looked on the Mobil 1 web site and found there are 2 Mobil 1 5w40 oils, one for diesel engines and another specifically formulated for Mercedes cars. Neither of these appear to be on Porsche's A40 approved oil list. So last night (Sunday) I asked Mobil which oil was suitable for use in Porsche cars:

I have several relatively new Porsches and have been using Mobil 1 0w40 in all of them. The Porsche technical service bulletin of A40 approved oils also lists Mobil 1 5w40 and shows worldwide availability. I've found Mobil 1 5w40 diesel oil and Mobil 1 ESP Formula M 5W-40 for Mercedes cars. Are either of these approved for use in Porsche cars? I can't figure out which Mobil 1 5w40 Porsche has approved. Which should I be using? A lot of people are now recommending to use Castrol Syntec 5w40, or another synthetic 5w40, instead of the 0w40 weight oil, but I would rather use Mobil 1 if possible.

And this morning I actually got an answer back from them (their exact response, which indicates somebody answered and somebody else sent the answer back to me)

ExxonMobil wrote:

The Mobil1 0W40 motor oil is the suitable product.

--

Thank you for choosing ExxonMobil products.

If you need further assistance, please contact ExxonMobil at 1-800-ASK-MOBIL

I hope this helps some decide whether or not Mobil 1 0w40 is suitable for (continued) use and reduces some of the less useful oil discussions. I'm neither advocating nor impugning the use of Mobil 1 or 0w40 oils, just reporting what Mobil responded to me.

[martialmedia]

I'll bet it makes you feel good to know that they spent so much time answering your question. haha. I think I'll just stick with Castrol 5w-40.

[JFP in PA]

I've seen more and more posts here and elsewhere regarding Mobil 1 is good, Mobil 1 is bad, use 5w40 instead of 0w40, etc. Most posts degenerate into opinion, speculation, ignorance or worse. So I looked on the Mobil 1 web site and found there are 2 Mobil 1 5w40 oils, one for diesel engines and another specifically formulated for Mercedes cars. Neither of these appear to be on Porsche's A40 approved oil list. So last night (Sunday) I asked Mobil which oil was suitable for use in Porsche cars:

I have several relatively new Porsches and have been using Mobil 1 0w40 in all of them. The Porsche technical service bulletin of A40 approved oils also lists Mobil 1 5w40 and shows worldwide availability. I've found Mobil 1 5w40 diesel oil and Mobil 1 ESP Formula M 5W-40 for Mercedes cars. Are either of these approved for use in Porsche cars? I can't figure out which Mobil 1 5w40 Porsche has approved. Which should I be using? A lot of people are now recommending to use Castrol Syntec 5w40, or another synthetic 5w40, instead of the 0w40 weight oil, but I would rather use Mobil 1 if possible.

And this morning I actually got an answer back from them (their exact response, which indicates somebody answered and somebody else sent the answer back to me)

ExxonMobil wrote:

The Mobil1 0W40 motor oil is the suitable product.

--

Thank you for choosing ExxonMobil products.

If you need further assistance, please contact ExxonMobil at 1-800-ASK-MOBIL

I hope this helps some decide whether or not Mobil 1 0w40 is suitable for (continued) use and reduces some of the less useful oil discussions. I'm neither advocating nor impugning the use of Mobil 1 or 0w40 oils, just reporting what Mobil responded to me.

"Becasue we told you so............." Now there is a sound argument with a lot of technical facts to back it up.............

[geoff]

I'll bet it makes you feel good to know that they spent so much time answering your question. haha. I think I'll just stick with Castrol 5w-40.

I was surprised and impressed I got an answer so quickly. The answer also made it clear Mobil's 5w40 oils are not their recommended product for Porsches

[jmatta]

They sure went out of their way to answer your question. Ask those that take apart broken M96 engines that use exclusively M1 0W40 and see the answer you get.

I wouldn't use Mobil 1 0W40 in my lawn mower.

[geoff]

"Becasue we told you so............." Now there is a sound argument with a lot of technical facts to back it up.............

It was the Mobil consumer site and I asked a basically simple, non-technical product usage question. From their answer, it's clear none of the Mobil 1 5w40 products on Porsche's approved oil list are available in the US, even though they are listed as applicable world wide. The two Mobil 1 5w40 oils readily available today in the US here don't correspond to any of Porsche's approved oils

I never intended this to be a technical discussion on the relative merits of Mobil 1, or to discuss the best weight motor oil, or to give Loren cause to lock this topic. Just to let members here know what Mobil had to say about Mobil 1 5w40 suitability

[geoff]

I wouldn't use Mobil 1 0W40 in my lawn mower.

I wouldn't use Mobil 1 0w40 in a lawn mower either, or any other 2 cycle motor

Please don't turn this topic into a Mobil 1 bashing discussion! That was never my intent in posting. There are plenty of other Mobil 1 comes straight from hell topics

[martialmedia]

I wouldn't use Mobil 1 0W40 in my lawn mower.

I wouldn't use Mobil 1 0w40 in a lawn mower either, or any other 2 cycle motor

Please don't turn this topic into a Mobil 1 bashing discussion! That was never my intent in posting. There are plenty of other Mobil 1 comes straight from hell topics

But it's soooo easy and it's fun. :)

[goldenwarrior1]

Dog Pile :jump: :jump:

[phillipj]

:clapping: :clapping: :clapping:

[JFP in PA]

Just to let members here know what Mobil had to say about Mobil 1 5w40 suitability

Which turned out to be nothing useful or of value. There was a time when 0W-40 Mobil 1 (and their other grades) were world class products; unfortunately, they no longer are………………….regardless of what their customer service people say.

Edited January 18, 2010 by JFP in PA

[Loren]

Closed for obvious reasons.