Mobil 1 5w30 5,000 mi Ls2 GTO

[02Hayabusa]

Here are the results of my first oil analysis. I stumbled across this board and was hooked. My GTO has 23k miles, I have used Mobil 1 5w30 for all previous oil changes, Stock Air filter, Purolator Pure 1 oil filter. I am giving Gold German Castrol a try for my latest oil change and will run an analysis in 5k miles to compair with the Mobil 1 results. Any feedback reguarding my results would be appreciated!

ALUMINUM 7
CHROMIUM 1
IRON 26
COPPER 83
LEAD 6
TIN 1
MOLYBDENUM 80
NICKEL 2
MANGANESE 1
SILVER 0
TITANIUM 0
POTASSIUM 2
BORON 48
SILICON 11
SODIUM 6
CALCIUM 2328
MAGNESIUM 17
PHOSPHORUS 601
ZINC 722
BARIUM 0
SUS Viscosity 62.1
Flashpoint 405
Fuel 0.5
Antifreeze 0
Water 0
Insolubles 0.4

 

[buster]

Decent report. Al I think is a tad high. Patman knows...

I think you'll see better results with GC. Any oil consumption?

 

[bruce381]

""Al I think is a tad high""
I'd say the Al is fine the FE and Cu are high.
bruce

 

[Patman]

Everything seems a bit high to me, even the nickel and tin, which should really be zero in an interval like this.

I think GC will do much better.

 

[02Hayabusa]

I added 3/4 of a quart at 4k miles. I commute 60 miles a day 5 days a week in this vehicle. I do not baby this car other than letting it fully warm up before putting a heavy load on the engine and keeping it maintained. It sees WOT and gets close to red line in first gear almost daily.

Thanks for the reply's! I am looking forward to learning more about what is normal wear for this engine when run hard and what oil protects it the best.

 

[Norm Olt]

Amsoil HDD 5W-30 is my suggestion.

How do you like your Goat, Mate? I looked at three after the AutoShow ads were quoting $24,995 out the door for a NEW 2006 6-Speed if you didn't already own a GM product (?).

And there I sit with a $3K spiff on my GM Card to use!

Cheers!

 

[buster]

I think you will see lower wear and oil consumption with GC. I'd also highly recommend Amsoil ASL 5w-30 for this engine.

 

[TeeDub]

Since you are in california, I'd run a thicker xw-30 (with HT/HS > 3.5 Cp), or a European type, SAE 5w-40. I believe the Mobil 1, 5w-30 or 10w-30 are simply a bit too thin to give you optimum results in these types of engines. For example, you would get MUCH better results running the Mobil 1, 5w-40 truck and SUV oil in this motor under the same conditions.

TD

 

[Winston]

Mobil does not make a 5W40 T&SUV oil anymore. Currently it is a 5W30. Also, the latest blend of M1 5W30 is 11.2 cSt, although the HTHS is only 3.1.

 

[administerturbo]

but Mobil does make a turbo diesel truck 5w-40. same stuff

 

[TeeDub]

The kinematic viscosity of the oil is NOT relevant to how it will perform in service, with regards to oil pressure and oil film thickness in the valvetrain. The HT/HS viscosity is a much better predictor of these parameters in actual service. About the only use for kinematic viscosity is to determine the correct SAE grade for engine oils.

The HT/HS viscosity of Delvac 1 is approx 4.0 Cp @ 150C - its fully 10% thicker than their 0w-40 when new and is much more shear stable. It's approx 30% thicker than their xw-30 grades and also has much higher levels of ZDDP for wear protection under high pressures in the valvetrain - including the chain driven camshaft in this pushrod engine.

The use of Delvac 1 will drop these wear rates by 25%-33% in this application right off the bat....

TD