VQ Oil Analysis and Info
09-18-2008, 11:06 AM
#622
Originally Posted by Jonathan Allyn
Thanks for the analysis. Yes I did fill back up with RP 5w/30 but am thinking about switching over to Castrol Syntec 5w/30 as I have seen some favorable impressions for this oil in the VQ. Is it OK to switch it out being that I have used RP for the last 20K?
Will
09-18-2008, 12:08 PM
#623
Originally Posted by Resolute
Fuel dilution needs to drop, and I'm sure it will as the rings continue to seat. Glycol is way off. Have you noticed coolant disappearing on you? Sodium is low for a freshly built engine, so either your coolant doesn't use a lot of sodium or the glycol is from something else. I'm leaning towards the former. Copper is a bit high, but that could be from residual gasket leachate, anti-seize compounds, and assembly lubes. Everything else looks pretty good. I have to say, I think your V2 engine might be off to a better start than ZeeForce's. I'd be curious to see how much the fuel dilution improves over the next 3k miles or so.
Will
Will
Hopefully fuel dilute will drop as she continues break-in. 0.8 is best to expect on these replacements I believe.
Glycol, agree is way off. No obvious drop in coolant level, but monitoring closely this interval.
Oil consumption continues to improve during current interval while still breaking-in.
So far I'm pleased with this build and will update at next UOA with ~3700-4000mi on DB 10w-30 oil again.
Wonder if all my oil services helped in comparison to ZeeForces V2 from the start and using a blend rather than conventional.
Thanx again.........
09-18-2008, 09:25 PM
#624
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Originally Posted by Resolute
Hi Curtis!
Sorry I took so long to get back with you on this. Wear has continued to improve, and everything is trending positive. It's nice to see your fuel dilution improve, and the drastic drop in sodium is reassuring. Makes sense that your coolant level dropping might have been a false reading, since there is such an improvement in the UOA. I still don't like the copper levels or Pb levels being so high. Pb is really not bad at all and I would be content to see it stay there, but 3ppm or less is better. The copper is another matter. I wonder, since PP uses Moly disulfide and not MoDTC, if the sulfur isn't contributing to the copper levels. This would be similar to a condition found with some RP oil blends. The viscosity was stable for a change, TBN was decent, even though your oxidation was high. Oxidation could be from several things, but mostly comes from cleaning varnishes and other deposits from inside the engine. This breaks the oil's TBN down and contributed to the higher TAN levels, and often helps shear the oil. Oxidation can be a good thing as long as your acids remain in check, since the oxidation shows PP is living up to its "cleaning" reputation. In this case, your viscosity and TBN are fine, so it looks good, Curtis. Next one will be a key UOA, to see if the trending continues and the Pb and Cu drop, as well as see if the slight increase in Nickel reverses.
Will
Sorry I took so long to get back with you on this. Wear has continued to improve, and everything is trending positive. It's nice to see your fuel dilution improve, and the drastic drop in sodium is reassuring. Makes sense that your coolant level dropping might have been a false reading, since there is such an improvement in the UOA. I still don't like the copper levels or Pb levels being so high. Pb is really not bad at all and I would be content to see it stay there, but 3ppm or less is better. The copper is another matter. I wonder, since PP uses Moly disulfide and not MoDTC, if the sulfur isn't contributing to the copper levels. This would be similar to a condition found with some RP oil blends. The viscosity was stable for a change, TBN was decent, even though your oxidation was high. Oxidation could be from several things, but mostly comes from cleaning varnishes and other deposits from inside the engine. This breaks the oil's TBN down and contributed to the higher TAN levels, and often helps shear the oil. Oxidation can be a good thing as long as your acids remain in check, since the oxidation shows PP is living up to its "cleaning" reputation. In this case, your viscosity and TBN are fine, so it looks good, Curtis. Next one will be a key UOA, to see if the trending continues and the Pb and Cu drop, as well as see if the slight increase in Nickel reverses.
Will
Not a problem, figured you were on vacation or needed a break form the forum. As usual I am always pleased with your expert interpretation of the raw numbers from my UOA’. Great to hear that wear has continued to improve. I was advised by Terry to start romping on engine with good pulls to 75% of redline. Safe but hard excels. I also hope this next UOA continues to improve. My fingers are crossed that soon this engine will completely seal.
Thanks again for all your hard work in keeping this sticky going and up to date.
Cheers
Curtis
09-27-2008, 04:57 PM
#625
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Will,
Have you seen any evidence to support that aftermarket air filters, like K&N/JWT are letting in more fine particulate than a stock panel filter? Thanks!
I'm assuming we'd see some kind of trend with the oil analysis, this is the part where I get lost however. lol
Have you seen any evidence to support that aftermarket air filters, like K&N/JWT are letting in more fine particulate than a stock panel filter? Thanks!
I'm assuming we'd see some kind of trend with the oil analysis, this is the part where I get lost however. lol
Last edited by Amarao; 09-27-2008 at 05:05 PM.
09-28-2008, 10:03 AM
#627
I saw higher silica particulate with my JWT pop chrgr with oil/cotton filter compared to my current Amsoil paper drop-in, with my stock air box set-up I went back to.
09-28-2008, 05:54 PM
#630
Will
09-29-2008, 05:44 AM
#634
I wouldn't sweat it if you already have one, but I wouldn't buy one knowing what I know now. I'm sure there are a few ponies to be had with the filter, but for filtering efficiency, I have seen UOA's from guys like 06CPV35 and ZeeForce switch to Amsoil's drop-in filters (made by Donaldson) and have better results. Donaldson makes a great synthetic media filter and sells it under Amsoil's licensing with good success. I keep waiting for them to come out and sell them direct, but so far they have only done this for the Corvette.
Will
Will
10-01-2008, 03:13 PM
#635
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Hey Resolute,
Here's my lab report that just came in today for my 2008 Z.
I had Royal Purple 5W-30, and drove it for 3768 miles.
How does this compare with previous RP 5W-30 reports? How does it compare with Amsoil Signature Series 0W-30 (the oil that I am using now, and will send in for an oil analysis after 3700-4000 miles)?
Thanks!
Forrest
Here's my lab report that just came in today for my 2008 Z.
I had Royal Purple 5W-30, and drove it for 3768 miles.
How does this compare with previous RP 5W-30 reports? How does it compare with Amsoil Signature Series 0W-30 (the oil that I am using now, and will send in for an oil analysis after 3700-4000 miles)?
Thanks!
Forrest
Last edited by xdrius; 10-01-2008 at 03:19 PM.
10-03-2008, 07:06 PM
#636
Your RP doesn't look that bad, but I still don't see it worth the premium. Again, there are oils whose average wear results are better for less money.
The Al and Pb is low, and looks good. No tin, and ring wear is nice. So, your pistons, rings, and combustion efficiency are all good. However, your Fe and Copper are higher than I would like them to be for a premium oil, which suggests spring bucket/cam lobe wear or timing chain wear for the Fe, and copper usually comes from bearings and valve guides. Seeing as your Lead is low, I'd say your valve guides are the primary source. Plus, this oil is no longer a 30 weight. RP continues its tradition of supplying a 30 weight oil that the VQ engine grinds up and shears down into a lesser grade. TBN is good, the oil will support an extended drain, and for what it costs, would be a good thing to do for anyone who insists on using the blend. It's not bad looking, but there are options for less wear with a lower price. If you want a premium boutique oil for extended drains, the Amsoil SSO 0W-30 is a good oil, otherwise do regular 3-4k mile drains with Castrol GTX 5W-30, or 6-7500 mile drains with Syntec or PP 5W-30.
Will
The Al and Pb is low, and looks good. No tin, and ring wear is nice. So, your pistons, rings, and combustion efficiency are all good. However, your Fe and Copper are higher than I would like them to be for a premium oil, which suggests spring bucket/cam lobe wear or timing chain wear for the Fe, and copper usually comes from bearings and valve guides. Seeing as your Lead is low, I'd say your valve guides are the primary source. Plus, this oil is no longer a 30 weight. RP continues its tradition of supplying a 30 weight oil that the VQ engine grinds up and shears down into a lesser grade. TBN is good, the oil will support an extended drain, and for what it costs, would be a good thing to do for anyone who insists on using the blend. It's not bad looking, but there are options for less wear with a lower price. If you want a premium boutique oil for extended drains, the Amsoil SSO 0W-30 is a good oil, otherwise do regular 3-4k mile drains with Castrol GTX 5W-30, or 6-7500 mile drains with Syntec or PP 5W-30.
Will
10-03-2008, 10:19 PM
#637
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Thanks Will. Your 'report' is more in-depth than Blackstone Laboratories' report. =)
As far as for the RP oil no longer being a 30 weight, how can you tell? The report shows that the viscosity levels are within the acceptable levels. How can you tell whether an oil kept its weight or not?
As far as for the RP oil no longer being a 30 weight, how can you tell? The report shows that the viscosity levels are within the acceptable levels. How can you tell whether an oil kept its weight or not?
10-04-2008, 07:34 AM
#638
Thanks Will. Your 'report' is more in-depth than Blackstone Laboratories' report. =)
As far as for the RP oil no longer being a 30 weight, how can you tell? The report shows that the viscosity levels are within the acceptable levels. How can you tell whether an oil kept its weight or not?
As far as for the RP oil no longer being a 30 weight, how can you tell? The report shows that the viscosity levels are within the acceptable levels. How can you tell whether an oil kept its weight or not?
Will
10-09-2008, 05:49 AM
#639
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Here's (yet) another analysis with Mobil 1 5W30:
Oil: Mobil 1 5W30
Filter: Purolator L14610
Miles on oil: 3762
Miles on engine: 34342
Make up oil: 0qt
Aluminum 2ppm
Chromium 1
Iron 9
Copper 5
Lead 7
Tin 2
Molybdenum 86
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 2
Boron 129
Silicon 8
Sodium 4
Calcium 2857
Magnesium 22
Phosphorus 846
Zinc 1069
Barium 0
SUS Viscosity @ 210F 58.6
cSt Viscosity @ 100C 9.81
Flashpoint 425F
Fuel <0.5%
Antifreeze 0.0%
Water 0.0%
Insolubles 0.3%
It's good to be average, I think. The car gets about 50/50% city/highway, with a hard 0-60 run when I can, which is probably about once a week.
Asterix
Oil: Mobil 1 5W30
Filter: Purolator L14610
Miles on oil: 3762
Miles on engine: 34342
Make up oil: 0qt
Aluminum 2ppm
Chromium 1
Iron 9
Copper 5
Lead 7
Tin 2
Molybdenum 86
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 2
Boron 129
Silicon 8
Sodium 4
Calcium 2857
Magnesium 22
Phosphorus 846
Zinc 1069
Barium 0
SUS Viscosity @ 210F 58.6
cSt Viscosity @ 100C 9.81
Flashpoint 425F
Fuel <0.5%
Antifreeze 0.0%
Water 0.0%
Insolubles 0.3%
It's good to be average, I think. The car gets about 50/50% city/highway, with a hard 0-60 run when I can, which is probably about once a week.
Asterix
10-11-2008, 09:20 PM
#640
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Here's (yet) another analysis with Mobil 1 5W30:
Oil: Mobil 1 5W30
Filter: Purolator L14610
Miles on oil: 3762
Miles on engine: 34342
Make up oil: 0qt
Aluminum 2ppm
Chromium 1
Iron 9
Copper 5
Lead 7
Tin 2
Molybdenum 86
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 2
Boron 129
Silicon 8
Sodium 4
Calcium 2857
Magnesium 22
Phosphorus 846
Zinc 1069
Barium 0
SUS Viscosity @ 210F 58.6
cSt Viscosity @ 100C 9.81
Flashpoint 425F
Fuel <0.5%
Antifreeze 0.0%
Water 0.0%
Insolubles 0.3%
It's good to be average, I think. The car gets about 50/50% city/highway, with a hard 0-60 run when I can, which is probably about once a week.
Asterix
Oil: Mobil 1 5W30
Filter: Purolator L14610
Miles on oil: 3762
Miles on engine: 34342
Make up oil: 0qt
Aluminum 2ppm
Chromium 1
Iron 9
Copper 5
Lead 7
Tin 2
Molybdenum 86
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 2
Boron 129
Silicon 8
Sodium 4
Calcium 2857
Magnesium 22
Phosphorus 846
Zinc 1069
Barium 0
SUS Viscosity @ 210F 58.6
cSt Viscosity @ 100C 9.81
Flashpoint 425F
Fuel <0.5%
Antifreeze 0.0%
Water 0.0%
Insolubles 0.3%
It's good to be average, I think. The car gets about 50/50% city/highway, with a hard 0-60 run when I can, which is probably about once a week.
Asterix