I got one of my friends to do a UOA on his KLR650:
Butler Labs Analysis:
The soot/sulf/oxid/nitr/ZDDP interpretation is new to me. Butler doesn't include them in my analysis results, but my buddy got them on his. I was able to find one oil analysis company who suggested the following guidelines:
soot < 20
sulfur 10 - 15
oxidation < 18
nitration < 14
Do these levels seem reasonable as cut-offs?
Also, for the ZDDP reading, I take it anything negative means all the ZDDP has been used up and all that's left are the degraded remains/byproducts? See this Noria article for reference.
On the plus side, the PQ shows very low when considering that the virgin oil starts out at 5. Also, my buddy's got much better Si levels than I do. It turns out he uses a NoToil air filter and oil, while I use a Uni with Maxima filter oil. If my Si levels don't drop down to around his levels I'll switch to a NoToil and see if it does the trick for me.
My recommendation was to go 800-1000 miles on his current fill of Valvoline and then retest. I'm not hopeful that it'll last even that long, though. I think he needs to switch to an HDEO or a synth with few/no VIIs if he wants longer OCIs.
What say y'all?
Butler Labs Analysis:
From what I can figure out, it looks like the engine's doing OK but the tranny is very unhappy and that's where the Cu and Fe/Al are coming from. The Zn is getting used up trying to protect the gears. The oil is a thick 20-weight. Yikes! Soot is fine, but sulf/oxid/nitr are high and the ZDDP has been used up--the oil's toast.code:
Element | Virgin | This OCI
Cu 0 9
Fe 1 14
Cr 0 0
Ni 0 0
Ti 0 0
V 0 0
Ag 0 0
Pb 0 2
Sn 0 0
Al 0 15
Si 4 4
Na 3 2
K 0 1
Mo 0 7
B 0 11
Ba 0 0
Ca 2884 2027
Mg 10 12
Mn 0 0
P 1164 723
Sb 0 0
Zn 1311 839
TBN Unk 7.5
Soot 0
Sulf 17
Oxid 34
Nitr 25
ZDDP -0.09
Visc SAE 40 20
Visc cSt 15 9.2 (both at 100 degrees C)
PQ 5 7
AntiFreeze Neg Neg
Fuel Dilute Neg Pending
Water Neg Neg
The soot/sulf/oxid/nitr/ZDDP interpretation is new to me. Butler doesn't include them in my analysis results, but my buddy got them on his. I was able to find one oil analysis company who suggested the following guidelines:
soot < 20
sulfur 10 - 15
oxidation < 18
nitration < 14
Do these levels seem reasonable as cut-offs?
Also, for the ZDDP reading, I take it anything negative means all the ZDDP has been used up and all that's left are the degraded remains/byproducts? See this Noria article for reference.
On the plus side, the PQ shows very low when considering that the virgin oil starts out at 5. Also, my buddy's got much better Si levels than I do. It turns out he uses a NoToil air filter and oil, while I use a Uni with Maxima filter oil. If my Si levels don't drop down to around his levels I'll switch to a NoToil and see if it does the trick for me.
My recommendation was to go 800-1000 miles on his current fill of Valvoline and then retest. I'm not hopeful that it'll last even that long, though. I think he needs to switch to an HDEO or a synth with few/no VIIs if he wants longer OCIs.
What say y'all?