Jeep 3.6L 20.5k mi; RL 0w-20 1.9k mi
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The Si could be related to the oil. Reach out to Redline and ask.
But over 150 ppm? I'll call them tomorrow. Thanks
no 150 ppm isn't normal.
has something been opened or replaced on the engine recently?
edit: is this the first UOA, at 20k miles it could still be from new assembly.
has something been opened or replaced on the engine recently?
edit: is this the first UOA, at 20k miles it could still be from new assembly.
dnewton3
Staff member
It's important to either know the VOA values from a similar sample, or pay to have your VOA run.
- The SI is high, but it could be from an additive (some anti-foam agents cause high Si readings). I'm not saying this is the case, but you'd want to check against a VOA of your specific product used. Of the several VOAs I looked at for Red Line from their other oils, they all are around the 20ppm mark (give or take). So your sample is high relative to what I'd expect to see.
- The Ox is high as well, for less than 2k miles. Some (much?) of that is probably due to the base stocks. Again, a VOA baseline would help here. The VOAs I've seen are typically around 70ppm or more, so yes, this seems reasonable.
- The Fe is a tad high, but given this is probably the second or third OCI, it's probably residual break-in.
- Wow; that's a shallow BN for an oil with such low use. The Ca and Mg are pretty darn low, as an observation.
NOTE: if you search our VOA section, make sure to check "Redline", "Red Line" and "RL" .... because folks are just darn sloppy when they title their threads.
- The SI is high, but it could be from an additive (some anti-foam agents cause high Si readings). I'm not saying this is the case, but you'd want to check against a VOA of your specific product used. Of the several VOAs I looked at for Red Line from their other oils, they all are around the 20ppm mark (give or take). So your sample is high relative to what I'd expect to see.
- The Ox is high as well, for less than 2k miles. Some (much?) of that is probably due to the base stocks. Again, a VOA baseline would help here. The VOAs I've seen are typically around 70ppm or more, so yes, this seems reasonable.
- The Fe is a tad high, but given this is probably the second or third OCI, it's probably residual break-in.
- Wow; that's a shallow BN for an oil with such low use. The Ca and Mg are pretty darn low, as an observation.
NOTE: if you search our VOA section, make sure to check "Redline", "Red Line" and "RL" .... because folks are just darn sloppy when they title their threads.
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Here is a recent Red Line 0w-20 VOA:
Greetings motor oil experts! Thank you for letting me on this board.
I mixed 5 bottles of Red Line and took a sample from that.
I have decided to service my car myself. With the money saved I can buy premium oil. $200 a year on motor oil is not such a bad deal.
I mixed 5 bottles of Red Line and took a sample from that.
I have decided to service my car myself. With the money saved I can buy premium oil. $200 a year on motor oil is not such a bad deal.
residual, additive, contamination, or a mix of that. A HF pump wouldn't give me a lot of confidence in being clean. I always get a fumoto valve or catch it mid drain from the pan. Messy sometimes but it removes an extra tool out of the equation for contamination.
TBN low early. Combined with such high Si.
Almost like - well has anyone else been under the hood?
Almost like - well has anyone else been under the hood?
with a starting tbn of less than 6, I don't consider it low early.
Agree, thought it started 8-10. Sorry
At a loss for Si. It's like something contaminated the oil. Not harmful by the looks of it.
I think what is needed is an oil analysis on the next sampe. it's a 20k engine so could still be elevated si from sealants, and it seems to have slightly elevated metals still aswell.
Unless they were doing 10k oil changes, which I doubt, still Si shouldn't be that high. Would you agree?
I don't know how high it was to start with, so all we can do is see if it comes down in the next 2k or so miles. if it doesn't there's likely a problem.
Air intake must not be sealed IMO. Oil looks good otherwise. VOA oxidation is around 80
Yes agree continue testing and I would be somewhat surprised if silicon was this high still from OEM sealants etc. unless going really long drain intervals.
OP: Which begs the question of how long were your intervals? I still would suspect the pump as being part of the problem. Can you start sampling from the oil drain going forward to eliminate a variable?
If that much Si from dirt, Al and Fe would be increased and depending on area might see more K and Na
Maybe from New - or Si gaskets still leaching. Agree, time will tell. 100:1 it drops next OCI
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