Valvoline 20-50 syn race in SBF results

[SteveL]

Oil Analysis

The above is an Excel file. I tried and still have no idea how to get a formatted table to appear correctly.

In any case, I'm interested in any feedback on used oil analysis. I'm don't enough in this area to interpret these results.

This is a Ford 302 crate motor (M6007-XB3M) used in a dedicated road course car (not street legal). Conventional 20-50 race oil was used for the first 10 hours (an analsys was not done on the break-in oil).

I have an Accusump to pre-charge the oil system before startups. I use a dual in-line filter setup with Wix racing filters before going to the oil cooler. Oil temps generally run 230-250 F and never above 260.

One measurement that stands out is the reduction in viscosity which is lowered by 8-15% below fresh oil. It seems the resulting viscosity still is about 40W.

 

[Colt45ws]

Code:

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Hrs on motor: 50 hrs 42 hrs ~20 hrs 10 hrs

Hrs on oil: ~8 hrs ~10 hrs ~10 hrs 10 hrs 0 hrs (VOA)

Aluminium 1 2 1 3 0

Chrome 0 1 0 1 0

Iron 9 27 5 18 0

Copper 1 2 2 2 0

Lead 1 4 2 5 0

Tin 0 3 0 2 0

Moly 554 556 536 518 497

Potassium 1 1 2 0 0

Boron 14 14 12 15 16

Silicon 5 8 9 16 5

Sodium 4 5 2 4 3

Calcium 915 907 954 938 905

Magnesium 3 4 1 3 3

Phos 1256 1070 976 982 833

Zinc 1230 1184 1154 1143 1029

Insolubles, % 0.2 0.3 0.2 0.2 0

Water, % 0 0 0 0 0

Fuel, %
Flashpoint, F 385 390 415 380 440

SUS @ 210F 76.2 75.8 78.9 73.1 85.5

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[SteveL]

Thanks. This might help in getting a reply.

 

[NovaMan]

I don't know why no one wants to touch this... maybe try posting it in the UOA forum?

I don't know much about interpreting UOAs, but to me it looks like your coolant system is sealed up nicely, and your bearings are not wearing. The iron looks a little high. It might be normal ring seating and cam break-in, but it seems to me like those processes should be completed by the time you rack up 50 hours on the motor. Definitely try to get a more educated opinion on the iron.
The drop in viscosity is kind of curious, as is the drop in flash point, especially since there is essentially no fuel dilution. That's another thing I would want a more educated opinion on, although I suspect 40W is plenty sufficient as long as you have decent oil pressure.

 

[salesrep]

I would say the oil is holding up nicely with these intervals. The machine looks like it could be a good one as well.

 

[RI_RS4]

Steve, I'd suggest that you have Terry Dyson do a reading on your analysis results. He has experience with that motor, as he has a 302 hotrod that he built himself.

 

[SteveL]

Quote:

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Steve, I'd suggest that you have Terry Dyson do a reading on your analysis results. He has experience with that motor, as he has a 302 hotrod that he built himself.

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Do you mean review the test results performed so far or have them do an analysis of the next sample?

 

[RI_RS4]

You might as well get Terry involved now. He can interpret your existing analysis data. Since he has direct experience with that motor, I'm sure he can provide some insights and recommendations.

http://www.dysonanalysis.com/servicelist.html

 

[unDummy]

2 Filters in parallel will flow pretty well. I'd skip the racing filters for something that filters better. Just use the regular Wix, or the FL1a Motorcraft filters. I'd bet that the Supertech ST8a would flow/filter just as well.

Theres really nothing here needing interpretation. Numbers look excellent for a race engine.
Shearing is normal.

So, what type of driving, engine rpm, shifting....does this engine see for the 10hr OCI?

For data comparison, I'd give the Qpower 15w50, Redline SAE50, Torco SR5, Amsoil TRO..... a couple of runs.

 

[Camu Mahubah]

It looks like the Valvoline is working well in your engine...I don't see any reason you would need to change...
It looks like a pretty stout oil to me...

 

[SteveL]

So far I've only used two brands of filters on this motor. Wix racing and Jomar. The Jomar is non-bypass and believe the Wix racing is as well. I went high flow instead of high filtration. With dual filters (and hold over from the last motor, I don't think dual filters are really required) I could run one of each.

It's a road course car. RPMs typically runs from 4000 up to my red line of 6000. Mostly 3 & 4th gear but down to 2nd on the slower corners and sometimes up to 5th on the longer straights.

10 hours on the oil is the maximum. That's four track days of about 2.5 hrs/day.