Mobil 1 0w-40

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May 10, 2008 | 06:22 AM

#21

lightnin

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Safety Car

Joined: Jun 2007

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From: No Star Whackers here. Md.

St. Jude Donor '11

Thank you for the input. My thinking is, this oil is designed to go 2 years, 15000 mi. I believe, without change in higher heat cars. I will not go any longer than 5000. I do not run an oil cooler. It seems like this could be better protection for the engine on track day.
If it turns out that I'm wrong in my thinking on this,(usually everytime I think,I get in trouble)

I will drain it.

May 10, 2008 | 08:20 AM

#22

Higgs Boson

Race Director

Joined: Jul 2007

Posts: 10,961

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From: Texas Hill Country

Quote:

Originally Posted by Today's problem is..

I guess I dont see the real advantage. Maybe my logic may be flawed, but with a 0w40 oil, you may use slightly less fuel/gain power during warm up, but then your oil is a thicker viscosity when hot, 40 weight instead of 30 weight, which I believe would create more drag, use more fuel/lose power while hot, but I am sure this is so slight it wouldnt be noticed by the driver. I dont know about anyone else, but my engine spends only a few minutes until the oil is up to temp. I thought the original intent on going to the thinner oils such as 5w30, 5w20 was to get the engines up to temp quicker to reduce emissions output and use slightly less fuel than their thicker counterparts. Feel free to correct me if wrong.

Not all engines run at 212, which is where the flow characteristics are measured. What is your engine operates with an oil temp of 230 or 250 or even 300? 30 weight is too thin. The idea is to get the oil to have the same flow/protection characteristics as a 30 at 212 at whatever temp you are running.

Not everyone has a stock Corvette, stock engine (heck mines an iron 408 which cruises with higher oil temps), not everyone takes their Vette to work (hello track days!), etc, etc.

May 10, 2008 | 02:59 PM

#23

Dave68

Race Director

Joined: Dec 2000

Posts: 19,304

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From: San Diego CA

Quote:

Originally Posted by lightnin

I will drain it.

Remember that our manuals tell us to drain when the D.I.C. says so OR 1 year, whichever comes first. I change my oil every year at about 5200 miles.

May 18, 2008 | 12:14 PM

#24

NEO1

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Joined: Feb 2005

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Mobil 1 0w40 is one of the most spec'd oils on the market today. Very highly regarded among the Porsche crowd.

How is it working in the Vette?

May 18, 2008 | 12:44 PM

#25

MadTom

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Joined: Jan 2007

Posts: 97

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From: Germany, Europe

Quote:

Originally Posted by NEO1

How is it working in the Vette?

Excellent

http://www.mobil.com/Germany-English...il_1_0W-40.asp

May 18, 2008 | 04:52 PM

#26

lightnin

Thread Starter

Safety Car

Joined: Jun 2007

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From: No Star Whackers here. Md.

St. Jude Donor '11

Quote:

Originally Posted by NEO1

Mobil 1 0w40 is one of the most spec'd oils on the market today. Very highly regarded among the Porsche crowd.

How is it working in the Vette?

I haven't blown anything up yet.

May 18, 2008 | 05:25 PM

#27

AU N EGL

Team Owner

Joined: Sep 2003

Posts: 43,084

Likes: 33

From: Raleigh / Rolesville NC

Quote:

Originally Posted by AlohaC5

I'm thinking of purchasing Mobil 1 0W40 for the 1st time to try it on the road courses (HPDE) this summer. I've heard only good things about this oil/weight.

I use 0W40 for Jan and Feb events. then back to 15w50 for Late Feb though DEC track events.

Lots of guys use 0w40 for HPDEs do to the HIGHER HEAT tolerance ( HTHS High Temp Heat Sheer )then 5-w30

5-W30 HTHS Viscosity, mPa·s @ 150ºC ASTM D 4683 3.09
cSt @ 100º C 11.3

10-W30 HTHS Viscosity, mPa·s @ 150ºC ASTM D 4683 3.14
cSt @ 100º C 10.0

0-W40 HTHS Viscosity, mPa•s @ 150ºC, ASTM D 4683 3.7
cSt @ 100º C 14

15-W50 HTHS Viscosity, mPa•s @ 150ºC ASTM D 4683 4.50
cSt @ 100º C 18.1

http://www.mobiloil.com/USA-English/...1_15W-50_.aspx

May 18, 2008 | 06:20 PM

#28

MadTom

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Joined: Jan 2007

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From: Germany, Europe

The HTHS is the reason

.

To complete the mobil 1 product range:

5W-50
HTHS Viscosity, mPa•s @ 150ºC, ASTM D 4683 4.3
cSt @ 100º C 17.4

http://www.mobil.com/Germany-English...bil1_5W-50.asp

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May 18, 2008 | 07:44 PM

#29

AU N EGL

Team Owner

Joined: Sep 2003

Posts: 43,084

Likes: 33

From: Raleigh / Rolesville NC

I have never seen M1 5-W50 here in the US. Or I would be all over it

May 18, 2008 | 10:04 PM

#30

NEO1

Instructor

Joined: Feb 2005

Posts: 219

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Redline 5w-30 HT/HS 3.8

5w-40 4.6

May 27, 2008 | 12:41 PM

#31

Bohannin

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Joined: Dec 2006

Posts: 85

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From: Queens NY

Quote:

Originally Posted by lightnin

OK, I have a few #s. Cold start up, oil pressure jumped to 42psi then settled in at 38. At 70 mph, 44 to 45 psi. Warm idle,31 to 32. Hammered throttle, 62psi. 190* oil temp.