INCOMING!!! Oil thread
06-26-2018, 07:59 AM
#1
Pro
Thread Starter
INCOMING!!! Oil thread
I just love to read oil threads, don’t you?
Anyway, back in my 997.2 days, I switched to Motul Xcess 8100 5W-40 oil because I live in LA and the warmer temps warranted a slightly heavier weight. The highly respected LexVan has a preference for Mobil 1 5W-50, another Porsche approved oil that also makes a lot of sense for warmer climates.
Anyway, moving to my 991.2, I’m again weighing my oil options. Surprisingly, the long piece posted below has ranked the current “FS” European car Formula Mobil 1 0w-40 impressively high in its protective capabilities and relatively high resistance to thermal breakdown. I believe this revision to this 0W-40 oil formula was made in 2016. Any thoughts on the validity of this analysis? It seems thorough..
https://540ratblog.wordpress.com/
Anyway, back in my 997.2 days, I switched to Motul Xcess 8100 5W-40 oil because I live in LA and the warmer temps warranted a slightly heavier weight. The highly respected LexVan has a preference for Mobil 1 5W-50, another Porsche approved oil that also makes a lot of sense for warmer climates.
Anyway, moving to my 991.2, I’m again weighing my oil options. Surprisingly, the long piece posted below has ranked the current “FS” European car Formula Mobil 1 0w-40 impressively high in its protective capabilities and relatively high resistance to thermal breakdown. I believe this revision to this 0W-40 oil formula was made in 2016. Any thoughts on the validity of this analysis? It seems thorough..
https://540ratblog.wordpress.com/
06-26-2018, 10:31 AM
#2
Race Director
That blog link has long since been debunked numerous times.
If you arent tracking the car, 0w40 is perfectly fine. in a hot climate, a mix of 5w50 and 0w40 or all 5w50 would also be good
If you arent tracking the car, 0w40 is perfectly fine. in a hot climate, a mix of 5w50 and 0w40 or all 5w50 would also be good
06-26-2018, 10:50 AM
#3
I am more inclined to trust Porsche and Mobil 1Engineers than a blog online. 0W40 is the selected oil for a reason. It's a good compromise for cold weather and warm weather climates as well as gas mileage consumption.
06-26-2018, 10:59 AM
#4
Pro
Thread Starter
Maybe I didn’t make my point clear- the blog has a very strong affinity for the Mobil 1 0W-40 vs the 5W-50.. therefore my question since typically I would expect the 5W-50 to hold up better.
06-26-2018, 11:58 AM
#6
Rennlist Member
Motul and M1 are both good, but I’m guessing Motul would be slightly better. I would just stick with Motul at this point.
I can’t comment on M1 50 vs 40, but have heard that the formula can change and be different. So to avoid that issue, again, I’d stick with Motul.
If you are tracking, one thing Motul has over Mobil is anti-foaming, which I think is important on the track.
I can’t comment on M1 50 vs 40, but have heard that the formula can change and be different. So to avoid that issue, again, I’d stick with Motul.
If you are tracking, one thing Motul has over Mobil is anti-foaming, which I think is important on the track.
06-26-2018, 12:06 PM
#7
Rennlist Member
There is no benefit in LA stop and go traffic for higher oil viscosity due to temps because you don’t have enough localized heat in the engine because the engine isn’t making any real power. So the pistons and valves and cylinders aren’t really that hot. Overall, the entire engine might be warmer, but it’s the radiators and coolant that now needs to remove the heat.
Now, if you are driving in a spirited fashion or on the track, the engine is generating much more localized heat that requires the oil to cool it down, 5-20x the power delivered and 60-80% more heat, followed by the coolant now needing to remove the heat from the oil. That’s where you will see higher oil temps and where you will need the higher viscosity - under significant load.
TL;DR - You don’t need higher oil viscosity on the street for driving in traffic and/or highway.
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06-26-2018, 12:52 PM
#9
Three Wheelin'
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0w40 and 5w40 are exactly the same viscosity in the hot summer weather. The only difference is the 0w has lower viscosity and flows better in very cold weather. Which has nothing to do with hot LA summers. So if you are seeking higher warm weather viscosity, only going to the 50 will accomplish this.
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06-26-2018, 05:59 PM
#10
Former Vendor
Thanks for endorsements all. It is true, Porsche accepts multiple viscosities depending on climate.
For Los Angeles proper, being a mild climate, a Motul 8100 100% synthetic 0W/5W-40 Porsche approved product should protect well. Those oils will feature a high HTHS viscosity for maximum engine protection at high temperatures. Our volatility numbers are quite low as well so even at high temps, the oil won't evaporate as quickly, this will lead to better additive and viscosity retention over the drain interval.
We do make an ester grp 5 based 100% synthetic oil called, Motul Sport 5W50. People here have been using it with good success as well if you do go down that route. Let us know if you have any questions. -Nick
For Los Angeles proper, being a mild climate, a Motul 8100 100% synthetic 0W/5W-40 Porsche approved product should protect well. Those oils will feature a high HTHS viscosity for maximum engine protection at high temperatures. Our volatility numbers are quite low as well so even at high temps, the oil won't evaporate as quickly, this will lead to better additive and viscosity retention over the drain interval.
We do make an ester grp 5 based 100% synthetic oil called, Motul Sport 5W50. People here have been using it with good success as well if you do go down that route. Let us know if you have any questions. -Nick
06-26-2018, 06:09 PM
#11
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06-26-2018, 06:31 PM
#12
Pro
Thread Starter
All- I’m not really looking for this to be a “what’s a recommended oil” thread as much as I was trying explore what are pointed out as the various positive attributes that come newer version of the M-1 0W-40 (at keast as presented in this article) if it’s bull****, then fine, but if there’s any validity to it, then it protects far better than the other oils mentioned on this thread- regardless of operating climate.
06-26-2018, 08:03 PM
#13
Former Vendor
All- I’m not really looking for this to be a “what’s a recommended oil” thread as much as I was trying explore what are pointed out as the various positive attributes that come newer version of the M-1 0W-40 (at keast as presented in this article) if it’s bull****, then fine, but if there’s any validity to it, then it protects far better than the other oils mentioned on this thread- regardless of operating climate.
I would say, that since the reformulation of Mobil 1 0W40 in 2015/2016 and not being able to get the BMW LL-01 approval since is not a good sign. Generally speaking, 0W40/5W40's have this approval and is an indication that the reformulation of this oil is not up to the task of passing BMW standards. What does that mean for you? Having various OEM approvals and passing more proprietary performance tests is a reflection of a product that is quite universal in its performance. BMW's test is focused on oil aeration, condition of oil at the end of a long drain interval and timing system performance. Porsche has their own standards for these tests as well so you could argue that the BMW tests are more stringent. One could say based on this is that there are better options for a Porsche approved oil. We would agree
Now in regards to if a 5W50 vs a 0W40 is "better" there is no simple answer. We're talking about this in another thread now. A 5W50 will rob you of power vs a 0W/5W40, potentially put more strain on the oil system (viscosity is an oil's resistance to flow after all) and all those factors can lead lead to higher oil temperatures. The cold grade or the oil's viscosity at start up will be a lot more "thick" or resistant to flow and that causes more engine wear. This is all assuming engine operation is normal, no track days with excessive strain on the engine oil or excessive oil temps on the engine for long periods of time etc. Just normal street driving. If that's the case, a 0W/5W-40 is a simple choice.
If you're seeing consistently high oil temps where the oil is falling out of grade almost exclusively (well beyond 212F) then stepping up to a 5W50 may be the right choice. Just don't believe in the "thicker oil" is better statement, it is not universal and often not true. -Nick
06-26-2018, 09:55 PM
#15
Three Wheelin'
Oil thread?....Oh please!
Just use Motul 8100 5W-40 and get on with it!
Lets talk about tires! There’s a non controversial subject....I’ll start, I like the round ones. How about you?
Just use Motul 8100 5W-40 and get on with it!
Lets talk about tires! There’s a non controversial subject....I’ll start, I like the round ones. How about you?