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Stage 3 2016 VW Golf R with aftermarket hybrid EQT Vortex Turbo. Full bolt on's, etc running E30 90% of time(91 pump remaining 10%) Car makes quite a bit more power than stock... dyno'd @ 499whp STD Corrected (415whp uncorrected.....Colorado car so we take power hit with the altitude). Stock...

I swapped out to same oil except in 5W-40 flavor, so is ester based as well. At this point I'm riding it out for 3k and then see what the #'s look like. I'll definitely pivot to something else if I see similar #s

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...

From Motul site...

3k on Motul Sport 5W50. Moving to Motul Sport 5W40 for winter

I don't have any dyno charts that show literally the same car dyno in Denver and then say at my tuners shop in San Francisco Bay area. I do, however, have my own dyno sheet (attached) from the shop here in Denver (Bluewater Performance) that uses the exact same Dynocom dyno as EQT uses pretty...

We will have to agree to disagree I guess on this one then. I've seen the significant hp differences as a mentioned previously on same cars with exact same mods dyno'd both here and Denver and sea level. It's backed up by data from the tuner and manufacturer of the turbo I have on my car (12 yrs...

On spool, yes, we take a hit on spool at altitude. That's why my tuner (also the manufacturer of the turbo on the car) recommends the smaller standard housing turbo vs their "XL" version. He states that these turbos will spool 400-500 rpm later at Denver altitude vs sea level. Understood that...

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...

If Walmart was selling old stock in late May of last year? I assume Walmart is churning that stuff fast enough that it's not sitting? I'm moving to a heavier weight oil based on recommendations I received here. Motul Sport 5w50 going in here shortly.

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!

Yeah I'm a bit concerned. Man, your data is good stuff man!

concerning to me as well. Don't know how much the new turbo going on about 900 miles into that 3k sample would impact the # but I can't imagine very much

2016 VW Golf R with bigger turbo added 900 miles into this ~3k mile Castrol 0W40 sample. Always running ethanol blends on both the stock turbo (E40) and the new larger turbo (E30-E35) Been running Castrol 0w-40 since I purchased the car in April 2019 @ 29.5k miles. Car makes quite a bit more...

First UOA from Blackstone on Castrol 0W40. Any thoughts on that Iron level being a bit high? Would the new turbo being added at 35500 miles been a contributing factor? Oil sample was pulled at ~37500 miles.

Thanks to you both. Much appreciated. I'll move forward with the Motul Sport 5w50. I literally just did a change 2 weeks ago (Castrol 0w40..both drain & fill). Waiting for the Blackstone report. A little less than 3k miles/7 months on that oil. 2k of that with the new turbo, but ran an even...

Good stuff. With Motul Sport even though it's dedicated track oil I assume ok to still run the 5w-50 flavor for street/track with change every 4k-5k (which is pretty much my annual mileage on this car)? My other thought is just to do the X-cess gen 2 for street and then flip to M1 15w50 for...

Great info. Thanks so much! Any chance Motul Sport 5w-50 is any better in that regard? I was leaning to M1 mainly because of better price point, but if SA % is much lower vs the M1 I may just go with that instead

edyvw & adams355, I assume this is the correct Mobil 5w50 that you are referring to and not the Euro formula 5w50?--> Full Synthetic FS X2 5w50? Seems to be more difficult to find but did find on Summit Racing and Jegs website (Jegs on sale right now) Also, on that oil since I stuck with the...

Sure would be nice to have that option here in the States! Never heard of the Falcon. Looks like a ripper