2003 Ranger 4.0 sohc Mobil 1 0W30 12.5k oci result

[rubydist]

Here is the latest oil analaysis on the supercharged Ranger, which now has 124,500 miles. Last change I switched to M1 0W30 (previous had been M1 5W30) to see if there was any change in performance or mileage. I did see a mileage increase of between 0.5 and 1.0 mpg over the life of this oil, and it never felt 'stiff' when it was cold. From the driver's perspective, it was an improvement.

As usual, Blackstones comments don't make a lot of sense....

Oil Analysis Report

Thoughts?

btw, this will be the last report on this truck, since I've recently sold it.

 

[buster]

Nothing is showing up.

 

[shanneba]

Most of the difference in mileage could have been from the change in winter to summer gas.
5w-30 from Oct - April
0w-30 from April to December

 

[addyguy]

Over 12.5k miles, 16ppm shouldn't be 'excessive' silicon...but wear metals are high. That is kinda weird, as all other aspects of the report (TBN, viscosity) are really good. Without make-up oil, having 5.8 TBN after 12.5k miles is impressive - looks like it would have gone to 20k miles!

 

[rubydist]

The custom intake hosing tends to let the worm clamps work loose over time, which I believe lets in a little dirt, but I've been watching that pretty closely over the past year, so I was expecting the silicon to be a little better than it was.

I believe that the 0W30 is a little better formulation than the 5W30, since the tbn stayed up better and the viscosity was right on track, even after 12500 miles. I think I'll switch my SHOs to 0W30 next time I change...

 

[Nyquist]

I recently talked to one of the M1 techs on the phone about their 0w30. He said the maximum recommended OCI on the 0w30 was 10,000 miles. Maybe that is why the wear metals are a trifle high.

 

[buster]

Regular M1 has a Tbn of only 8.5 so 10k is about right.

 

[VW_TDI_PD]

Well, those comments on the UOA make perfect sense to me, what dont you understand?

 

[rubydist]

He says there is a new issue with silicon - the problem with that comment is that silicon is not significantly higher than it has been on all the prior samples.

The other significant point is that I recently sold the truck. The buyer had the truck inspected, including a visual examination of the cylinder walls. The inspector reported that there was no visible scuffing on the cylinder walls - in fact he said the truck was 'stellar'.

 

[artificialist]

Originally Posted By: rubydist
The custom intake hosing tends to let the worm clamps work loose over time, which I believe lets in a little dirt, but I've been watching that pretty closely over the past year, so I was expecting the silicon to be a little better than it was.

I believe that the 0W30 is a little better formulation than the 5W30, since the tbn stayed up better and the viscosity was right on track, even after 12500 miles. I think I'll switch my SHOs to 0W30 next time I change...

That, and failing intake clamps may let air past the MAF, or create turbulence in front of the MAF, resulting in inaccurate measurements, leading to incorrect timing and fueling from the engine computer, and therefore an engine that doesn't properly burn gasoline.

IDK if this engine uses a MAF. Many engines that are heavily modified have the Mass Air system eliminated in favor of Speed Density (MAP sensor alone) because the MAF puts a choke hold on the intake, or if the intake air is moving to quickly for the MAF to meaure.

In any case, I think it is great that you are getting such results from an engine handling so more horsepower than it was made to handle.

 

[addyguy]

Aluminum seems really high. TBN is very strong after 12k miles. I'd say the Al was abrasive wear from Silicon, but for 12k miles, Si isn't THAT high....

 

[buster]

High Fe. M1 0w-30. Everything looks great though.

 

[tig1]

Buster,
Is the iron really high considering the average is 15?
I don't see what the univ. average is for mileage, but since the PPM is 15 the iron may be about right for the oil run on this report.

 

[FZ1]

You just ran the oil too long. It's not the oil;It's what's in the oil that needs to be dumped sooner.

 

[buster]

Si could be an issue.

 

[tig1]

Originally Posted By: FZ1
You just ran the oil too long. It's not the oil;It's what's in the oil that needs to be dumped sooner.


Guys'
What is the top end limit for iron in a UOA? I guess the wear metals accumalate the longer a OCI runs.

Hasn't Doug mentioned 150PPM or there abouts?