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Old 01-28-2015, 12:44 PM   #551
gsrcrxsi
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Member#: 236952
Join Date: Jan 2010
Chapter/Region: MAIC
Location: Baltimore
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2010 WRX (SSM)
Stg "2+" 300hp/360trq

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According to ACL there is no Al in the bearings. the top layer is a lead-tin-copper alloy

http://www.aclraceseries.com/engineering.html
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Last edited by gsrcrxsi; 01-28-2015 at 12:54 PM.
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Old Yesterday, 10:44 AM   #552
gsrcrxsi
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Member#: 236952
Join Date: Jan 2010
Chapter/Region: MAIC
Location: Baltimore
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2010 WRX (SSM)
Stg "2+" 300hp/360trq

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just took my last sample for this OCI - 5320mi. will send it in today.

I did not change the oil yet, as I'm getting the oil pan replaced with a Killer B next friday and it would be a waste to have to dump ~400mi old fresh oil lol. I was a tad low, so I topped off with 1qt AFTER taking my sample (pretty sure my turbo seals are getting a little leaky). So the total OCI will be like ~5600mi, but I wont take a sample at drain because the results will be skewed from the added oil.

after the Killer B pan is installed, I'm going to run 1 more OCI on M1 0w40, taking 3 samples along the way, then switch to Rotella T6 and begin building my trends for comparison.
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Old Today, 03:27 PM   #553
JTPitsch
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^ M1 0w-40 seems to be doing well. You are just switching to T6 just for science? I much appreciate your effort and charts that you make, good reading.
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Old Today, 06:39 PM   #554
gsrcrxsi
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2010 WRX (SSM)
Stg "2+" 300hp/360trq

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Yeah it does work pretty well. And the M1 0w40 is cheaply obtained from Walmart for $5/qt. but to be honest I have noticed slight reductions in oil pressure towards the last 1000mi of a 5000mi OCI. And I'm sure that has to do with it thinning out.

And yeah. I play with Excel all day at work and I do a lot of trending graphs so I figured this would be a good way to present and compare data. It's really just for my own curiosity and maybe someone else finds it interesting too. I'm interested to see how the T6 compares in long term viscosity, oil pressure and engine wear metals.


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