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Yesterday I ran the car normal/hard. Oil pressure at idle, 220 degrees, Motul Ex-Clean 5-40 was just above one bar. When OP cited 3.5 reading hot I suspect his motor was not up to full running temperature. Those naysayers who worry about having "too high" oil pressure can relax.
Yesterday I ran the car normal/hard. Oil pressure at idle, 220 degrees, Motul Ex-Clean 5-40 was just above one bar. When OP cited 3.5 reading hot I suspect his motor was not up to full running temperature. Those naysayers who worry about having "too high" oil pressure can relax.
Idle bar is down to 2 to 2.25. Maybe it was the new filter not broken in at first. Don't know.
Been some knowledgeable and funny posts here. Now it's time to put that used Mobil 1 in my lawnmower.
I checked yesterday. Very warm weather close to 86 F (30 degree Celcius). Completely warm engine after 50 minutes in city traffic with Mobil 1 New life 0W-40: 1,5 in oil pressure on idle. From idle it increases quickly. I don't really see the issue? Assuming thet the gague is correct.
When I started the engine from cold the pressure was on 5+ for a short while. Perfectly normal to me.
edit: I will test with the OBD-tool as well to see if I get other readings.
Generally it's believe Motul 5W40 is superior to Mobil 0W40 for various reasons (I use it myself), specially if one tracks, or on M96/M97 engines... BUT Mobil 0W40 is just good enough for almost all users if changed frequently. End of the story!
Coincidentally when this thread started I was making the same change. My car has lived on Mobil1 0w-40 for the initial 44k miles of its life and I've wanted to switch to Motul 5w-40 because it gets super hot here in central FL and doesn't ever really get cold. I decided to send off a sample of the used Mobil1 to Blackstone Labs for a full analysis, here's the report I just got back:
I ran this oil for exactly 12 months and just over 4k miles. Oil viscosity is a little low, otherwise the engine appears to be in great shape from 10+ years of Mobil1 0w-40. The TBN was high so they recommended running it longer to maybe 6k miles but I'm not sure why they would recommend that if the viscosity was lower than it should be? Doesn't that indicate the oil needed to be changed?
With that TBN I'd run it an extra couple thousand miles. With the viscosity the way it is, though, I'd change it sooner instead. I understand that is typical for M1 0W-40.
Coincidentally when this thread started I was making the same change. My car has lived on Mobil1 0w-40 for the initial 44k miles of its life and I've wanted to switch to Motul 5w-40 because it gets super hot here in central FL and doesn't ever really get cold. I decided to send off a sample of the used Mobil1 to Blackstone Labs for a full analysis, here's the report I just got back:
I ran this oil for exactly 12 months and just over 4k miles. Oil viscosity is a little low, otherwise the engine appears to be in great shape from 10+ years of Mobil1 0w-40. The TBN was high so they recommended running it longer to maybe 6k miles but I'm not sure why they would recommend that if the viscosity was lower than it should be? Doesn't that indicate the oil needed to be changed?
Classic Mobil 1 shearing. Motul will be an improvement. Watch your iron and copper start coming down too. Those will be 1/2 those current values in about 2 oil change intervals with a steady diet of Motul.
Really interesting that you should post this.
I exclusively use Mobil 1 0w-40 in my '09 911, my '08 Cayenne S, and my '12 Panamera 4s.
All reports exhibit the same lower than recommended values for viscosity (particularly @210 deg F)
Below is an example from my 997.2 after only 2900 miles and 10months operation. The TBN was extremely good but viscosity was not. Very similar viscosity issues on both the Panamera and Cayenne also.
As I'm seeing the same issue across 3 vehicles I am considering alternatives.
Below is the Panamera report after 6200 miles and 12 months operation.
And finally the Cayenne after 4000 miles and 6 months operation:
Originally Posted by Hunt3R
Coincidentally when this thread started I was making the same change. My car has lived on Mobil1 0w-40 for the initial 44k miles of its life and I've wanted to switch to Motul 5w-40 because it gets super hot here in central FL and doesn't ever really get cold. I decided to send off a sample of the used Mobil1 to Blackstone Labs for a full analysis, here's the report I just got back:
I ran this oil for exactly 12 months and just over 4k miles. Oil viscosity is a little low, otherwise the engine appears to be in great shape from 10+ years of Mobil1 0w-40. The TBN was high so they recommended running it longer to maybe 6k miles but I'm not sure why they would recommend that if the viscosity was lower than it should be? Doesn't that indicate the oil needed to be changed?
Anyone with Motul analysis under same milage and conditions?
I had an analysis done on Motul with about 3600 miles and the viscosity is about 66, within the specs, not out of specs.
That's one of the things some people complain about Mobil1 0-40 is that it shears out of grade pretty quickly. with that, it's not good for extended oil change intervals.
06-02-2015, 09:41 PM
