Hey all,
some of you may remember my post regarding my oil light coming on after reaching operating temp, however when I would check the oil level after shutdown, it was only slightly below the max mark once all oil drained back to the pan. During my investigations, I saw a noticeable amount of metallic material in the oil filter housing, so I thought maybe the oil filter was getting a little over worked, so even though only at 1300 miles on the oil, I decided to change the oil.
Quick back story: this engine was fully rebuilt just under 3k miles ago, New main and rod bearing, CP pistons w/ rings, all machine work done by lang racing. First oil interval was 1200 miles with 15w-50 conventional break in oil, then 1300 on 10w-60, that oil last 1300 run was the oil I had just drained in the above statement.
Ok, so the reason I rebuilt the motor was due to oil consumption. After doing a leakdown test prior to the rebuild my results were
Cylinder 1: 3% heard at oil cap
Cylinder 2: 4% heard at oil cap
Cylinder 3: 2% heard at oil cap
Cylinder 4: 2% heard at oil cap
Cylinder 5: 3.5% heard at oil cap
Cylinder 6: 3.5% heard at oil cap
I figured this wasn’t really abnormal and concluded the consumption must have been from valve seals. Had the motor rebuilt, and here we are back at the current situation. When I saw all the metallic material in the OFH, I decided to drain it and take an oil sample like i always do. The report came back stating,
“The oil filter clogging can be a reason for the low oil light, but we wouldn't rule out oil
consumption due to a cylinder-area issue. Chrome (piston rings) and iron (cylinders and other steel parts)
nearly doubled after a similar run as last time. Increasing oil consumption is a common symptom of a
ring/cylinder-area issue. Ticking can be another. You might consider a compression or leak down test due
to the wear. The other wear metals look okay, overall, but now aluminum (pistons) is reading at its highest
level”
I did a leakdown test yesterday, and my results were all consistently higher than before:
Cylinder 1: 4%
Cylinder 2: 5%
Cylinder 3: 6%
Cylinder 4: 5%
Cylinder 5: 5%
Cylinder 6: 5% All cylinders heard at oil cap.
My question: How long do piston rings take to seat? Do you think those materials in the oil are normal for a new motor with less than 3k miles? Or do you think I actually have a ring issue, in which case I’m screwed, bc as good as everyone says he is, I highly doubt lang will stand behind any of their work as their website states zero warranty on any work they do.
some of you may remember my post regarding my oil light coming on after reaching operating temp, however when I would check the oil level after shutdown, it was only slightly below the max mark once all oil drained back to the pan. During my investigations, I saw a noticeable amount of metallic material in the oil filter housing, so I thought maybe the oil filter was getting a little over worked, so even though only at 1300 miles on the oil, I decided to change the oil.
Quick back story: this engine was fully rebuilt just under 3k miles ago, New main and rod bearing, CP pistons w/ rings, all machine work done by lang racing. First oil interval was 1200 miles with 15w-50 conventional break in oil, then 1300 on 10w-60, that oil last 1300 run was the oil I had just drained in the above statement.
Ok, so the reason I rebuilt the motor was due to oil consumption. After doing a leakdown test prior to the rebuild my results were
Cylinder 1: 3% heard at oil cap
Cylinder 2: 4% heard at oil cap
Cylinder 3: 2% heard at oil cap
Cylinder 4: 2% heard at oil cap
Cylinder 5: 3.5% heard at oil cap
Cylinder 6: 3.5% heard at oil cap
I figured this wasn’t really abnormal and concluded the consumption must have been from valve seals. Had the motor rebuilt, and here we are back at the current situation. When I saw all the metallic material in the OFH, I decided to drain it and take an oil sample like i always do. The report came back stating,
“The oil filter clogging can be a reason for the low oil light, but we wouldn't rule out oil
consumption due to a cylinder-area issue. Chrome (piston rings) and iron (cylinders and other steel parts)
nearly doubled after a similar run as last time. Increasing oil consumption is a common symptom of a
ring/cylinder-area issue. Ticking can be another. You might consider a compression or leak down test due
to the wear. The other wear metals look okay, overall, but now aluminum (pistons) is reading at its highest
level”
I did a leakdown test yesterday, and my results were all consistently higher than before:
Cylinder 1: 4%
Cylinder 2: 5%
Cylinder 3: 6%
Cylinder 4: 5%
Cylinder 5: 5%
Cylinder 6: 5% All cylinders heard at oil cap.
My question: How long do piston rings take to seat? Do you think those materials in the oil are normal for a new motor with less than 3k miles? Or do you think I actually have a ring issue, in which case I’m screwed, bc as good as everyone says he is, I highly doubt lang will stand behind any of their work as their website states zero warranty on any work they do.
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