2x 5L jugs of Motul Sport 5w50 just arrived today. I only have 50-75 miles on the new Castrol, so I'll just dump it and take the $ loss. Fortunately, it's relatively cheap!
'16 Big Turbo Golf R running Ethanol Blend
- Thread starter MSH
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2x 5L jugs of Motul Sport 5w50 just arrived today. I only have 50-75 miles on the new Castrol, so I'll just dump it and take the $ loss. Fortunately, it's relatively cheap!
I run E25 every tank and historically E30 quite frequently with nothing negative to the oil that I can see or impacts to wear metals.
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He is running more power. The 3 reasons to run a higher grade are power levels over stock, track/race use and ethanol/other fuels in no specific order. High iron levels are a good indicator of wear from ethanol in the cylinders. I know it happens but here is an article as well.
Effects of ethanol content on cast iron cylinder wear in a flex-fuel internal combustion engine–A case study
The localized wear within a four-cylinder automotive spark-ignition internal combustion engine was investigated using a dynamometer durability test. T…
www.sciencedirect.com
I understand that but I'm at 2x stock power level - 170 stock to now around 380 which isn't *too* far off from where he is and am running ethanol blends as well. This is just the new turbo but of course, could be wrong. I've seen UOAs on the MQB cars just like his that are running E30 and big power numbers without high metal/wear numbers.He is running more power. The 3 reasons to run a higher grade are power levels over stock, track/race use and ethanol/other fuels in no specific order. High iron levels are a good indicator of wear from ethanol in the cylinders. I know it happens but here is an article as well.
Effects of ethanol content on cast iron cylinder wear in a flex-fuel internal combustion engine–A case study
The localized wear within a four-cylinder automotive spark-ignition internal combustion engine was investigated using a dynamometer durability test. T…
380 and 500 are very different especially from the same motor. You have more experience than me with that motor. I can't guarantee what it is though. It could be driving style, dyno runs, altitude or condition of motor and turbo. etc. However, it is known that the ethanol blends are very hard on oil. Even your UOA was showing more shearing with the ethanol and that was the only difference in your OCI.
Correct, more shearing but zero wear metal issues - that's what I'm getting at. Just can't really say anything with a single point source of data and a recent turbo change out screams as the source here. Easy/cheap to change it and go with what is being recommended (the 5W50) and pull a sample in 2K or so.
But, about UOA, that oil shearing in an engine like that is almost non-existent. Iron numbers are not good, but it could be new turbo. Other than that, you could run Castrol 0W40 in winters if no track time.
Only 2900 miles though on that oil so wouldn't expect much (at least me) vs. a 5-7K run.
Actually, for whatever reason I thought he did 5k OCI.
I have only been averaging 4k miles per yr, so to get another 3k sample is going to take me 9-ish months if that trend continues. What is the minimum mileage I should be really pulling a sample? If I go 2k that would be around the June/July timeframe for me. I would expect I would have a track event or two on the oil at that time as well.
On running Castrol in the Winter I think I'm spooked enough at this point where I will just run the heavier 5w50 Motul Sport year round. The car still gets hard miles in Winter when weather is nice
It's supposed to be 17.9 mm²/s = 17.9 cSt. Seems unreal an oil could shear that much.
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Motul Sport Ester 5W-50 - Ölanalysen und Ölanalytik für Motor und Getriebe
Hier ist die FÖA. Danke an allen, die sich beteiligt haben :check: @TDI-2.7 [URL:https://oil-club.de/index.php?user/360-tdi-2-7/] @Georg-TDI [URL:https://oil-club.de/index.php?user/51-georg-tdi/] @Pi x Daumen…
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Holy shear! Either Blackstone made mistake or that engine really beats down oil.
His flashpoint is exceptional so it is not fuel dilution and it is a testament to the primary role of this oil: track use.It's supposed to be 17.9 mm²/s = 17.9 cSt. Seems unreal an oil could shear that much.
Fuel at
two VOAs:
Motul Sport Ester 5W-50 - Ölanalysen und Ölanalytik für Motor und Getriebe
Hier ist die FÖA. Danke an allen, die sich beteiligt haben :check: @TDI-2.7 [URL:https://oil-club.de/index.php?user/360-tdi-2-7/] @Georg-TDI [URL:https://oil-club.de/index.php?user/51-georg-tdi/] @Pi x Daumen…
seeing that the previous Castrol 0W-40 was @12.08 on 2900 miles you think it's the latter? I'll pull the current Motul Sport 5-40 after 3k and see how it does. I will say this car does see a fair amount of hard driving. While I didn't do any track days like I intended (life just got in way) it sees lots of hard canyon driving and redline pulls.