The previous oil is Mobil 1 Extended Performance 5w30.
Car is fully modded, daily driven, making around 360 whp and 370 wtq.
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Mobil 1 0w-40, 4250mi, Mitsu Evo X
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The previous oil is Mobil 1 Extended Performance 5w30.
Car is fully modded, daily driven, making around 360 whp and 370 wtq.
Originally Posted By: bluesubie
Mobil 1 10w30 may shear to a 20 grade, so I would probably stick with this. I think the 10w30 is factory fill though.
What are you running now? Insolubles are really low at .1%. What oil filter are you using?
-Dennis
Right now using Mobil 1 Mobil 104 filter.
Yes, the 30 weight oil shears down too much due to the higher rpm engine and rear mounted turbo. I think the 0w-40 is a better choice than the 30 wt.
OEM: Mobil 5w30
Mobil 1 10w30 may shear to a 20 grade, so I would probably stick with this. I think the 10w30 is factory fill though.
What are you running now? Insolubles are really low at .1%. What oil filter are you using?
-Dennis
Right now using Mobil 1 Mobil 104 filter.
Yes, the 30 weight oil shears down too much due to the higher rpm engine and rear mounted turbo. I think the 0w-40 is a better choice than the 30 wt.
OEM: Mobil 5w30
looks like a good uoa for a car that gets enjoyed.
what does rear mounted turbo have to do with anything though?
what does rear mounted turbo have to do with anything though?
Originally Posted By: matt922
looks like a good uoa for a car that gets enjoyed.
what does rear mounted turbo have to do with anything though?
The rear mounted turbos generate more heat, much more than a front mounted turbo near the front of the car and radiator fans.
looks like a good uoa for a car that gets enjoyed.
what does rear mounted turbo have to do with anything though?
The rear mounted turbos generate more heat, much more than a front mounted turbo near the front of the car and radiator fans.
This oil always impresses me glad i have lots in stash,looks good nice report sheared some but 040 always does and in this application i think it did well nice sold 30w awesome Cal and Zinc,Boron try longer next time.
Originally Posted By: daman
This oil always impresses me glad i have lots in stash,looks good nice report sheared some but 040 always does and in this application i think it did well nice sold 30w awesome Cal and Zinc,Boron try longer next time.
Indeed,the results were very stout. I expected the oil to shear down a bit. So it was nothing unexpected.
This oil always impresses me glad i have lots in stash,looks good nice report sheared some but 040 always does and in this application i think it did well nice sold 30w awesome Cal and Zinc,Boron try longer next time.
Indeed,the results were very stout. I expected the oil to shear down a bit. So it was nothing unexpected.
Most of your PCMO xw-40 grade oils shear to a 30 grade. The most shear stable 40 grade oils are Amsoil DEO, D1 ESP, Red Line 0w-40/5w-40. This is not just something exclusive to this oil. If you look at Redline 0w-40, it has a HT/HS of 4.0. I assume they formulate their oil w/o regard to fuel economy.
It's like I said in the recent Amsoil shear test, there is nothing wrong with the test, but some things to keep in mind.
Everyone is out of spec @ 5% fuel dilution in that test.
Everyone is well within stay in grade after the shear test.
*Essentially no shear means pretty bad fuel economy.
All the studies I've read suggest HT/HS has the most impact on fuel economy. Friction modifiers can only work to a point to improve fuel economy. It's the same reason why Mobil 1 0w30 has a HT/HS of 2.99.
In this particular UOA, fuel is a tad high. TR with B/S is a bit conservative. I don't like the viscosity drop, but apparently OEM's are ok with it. I don't know?
It's like I said in the recent Amsoil shear test, there is nothing wrong with the test, but some things to keep in mind.
Everyone is out of spec @ 5% fuel dilution in that test.
Everyone is well within stay in grade after the shear test.
*Essentially no shear means pretty bad fuel economy.
All the studies I've read suggest HT/HS has the most impact on fuel economy. Friction modifiers can only work to a point to improve fuel economy. It's the same reason why Mobil 1 0w30 has a HT/HS of 2.99.
In this particular UOA, fuel is a tad high. TR with B/S is a bit conservative. I don't like the viscosity drop, but apparently OEM's are ok with it. I don't know?
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