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    2017 VW GTI, Castrol 0w-40, 5k mile UOA

    Vehicle is stock and had an unknown oil change history prior to my ownership.
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    Lowest Noack oil for my 2018 VW GTI

    Originally Posted by JoelB To be clear, that's your opinion, not fact. The fact is in certain vehicles they catch oil that otherwise would have gone into the intake. That doesn't appear to be an issue on this platform. Catch can or no, these cars develop valve deposits. The RacingLine catch...
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    Lowest Noack oil for my 2018 VW GTI

    Does anybody know what the HTHS and NOACK are for Castrol 0w40? https://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/ABA58BD5C9E98421802582D000613AC5/$File/BPXE-B33J98.pdf
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    Lowest Noack oil for my 2018 VW GTI

    Related to the comments about the Ravenol being too thick, I think this is a useful comparison. Motul VW 502 - 505 Specific: Density at 20* C .848 Viscosity at 100* C 13.9 Viscosity at 40* C 84.9 Viscosity index 167 Pour Point -36* C versus Ravenol RUP 5w40 Density at 20* C .846 Viscosity...
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    Lowest Noack oil for my 2018 VW GTI

    Originally Posted By: JOD Personally, I think that's way thicker than you need and you'll just end up costing yourself power. Also, keep in mind that if you get an actual tune (not a piggyback tune), your oil temps are going to drop--significantly. After my APR tune, the temps are consistently...
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    Lowest Noack oil for my 2018 VW GTI

    This is the oil I'm eyeing for my personal MK7 GTI at my next change. These cars see oil temps start to climb pretty quickly when driven hard, plus I plan on doing a downpipe, intercooler and tune here shortly, so I want something that's capable of standing up to those potentially high...
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    2017 WRX STi - Motul X-Clean 5w30

    Originally Posted By: Tiir With a HTHS of 3.6 you are using the X-clean+ I assume. If you are concerned with TBN, why not use X-clean EFE ? Yeah, you loose .1 HTHS, but is 3.5 to 3.6 really that big of a difference when you gain far more TBN if you plan on running the recommended manufactures...
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    2017 WRX STi - Motul X-Clean 5w30

    Originally Posted By: hallstevenson The car is a lease. Do you plan to buy it at the end of the lease ? If not, why overthink this ? I'd been considering buying out the lease early and keeping the car. We just paid off my wife's car, so if the plan is to keep it I might as well start paying...
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    2017 WRX STi - Motul X-Clean 5w30

    Originally Posted By: Garak Just to add to the confusion, look at the 5w-40 bit. Now, it's great to say follow the manual to the letter, but that gets problematic when it's impossible to follow the manual to the letter. 5w-40 is an acceptable viscosity, according to the page snippet posted. Now...
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    2017 WRX STi - Motul X-Clean 5w30

    Well, the ignore feature made itself useful rather quickly.
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    2017 WRX STi - Motul X-Clean 5w30

    Originally Posted By: oil_film_movies Originally Posted By: Coogles I'm using a 5w30 in an attempt to keep Subaru happy under warranty. Except all the oils you choose don't meet warranty requirements. According to the Owner's Manual, which apparently nobody reads, you need a 5w-30 full-synthetic...
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    2017 WRX STi - Motul X-Clean 5w30

    This interval will be my last with the Motul, that was my final jug of it. The T6 multi-vehicle 5w30 will likely be what I go with next at 12k miles. Still hoping to see the copper come down on the next run, but if not, at least it's a lease and I can hand back the keys before the warranty expires.
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    2017 WRX STi - Motul X-Clean 5w30

    I chose this oil because it has one of the higher HTHS specs (3.6) of any 5w30 I found with an API seal (even though it's not the newest SN spec the manual calls for). More than anything else I'm concerned about keeping those bearings happy, so I'm willing to go with a shorter interval to use an...
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    2017 WRX STi - Motul X-Clean 5w30

    3rd run on Motul X-Clean 5w30, I'm using a 5w30 in an attempt to keep Subaru happy under warranty. Break-in oil was changed out at 1k miles, with subsequent changes at 3k, 6k, then again at 9k. Car is (and will remain) bone stock aside from having the noise pipe removed. With only a 2.8 TBN...
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    New 18 STI Factory fill UOA 1,300 mi

    Originally Posted By: Vlad_the_Russian Originally Posted By: Spdfrk1990 Originally Posted By: Vlad_the_Russian Do your vehicle a huge favor - use the best oil from the start. Like this here. 0w30 or 0w40 is what I would recommend, but 5w30 is fine as well. 0w30 and 0w40 just have a wider range...
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    PUP 5w-30 - 4,000 miles - 2017 WRX STI

    Originally Posted By: bluesubie Originally Posted By: Coogles I asked about using a 5w-40, but was told by my dealer that I'd have warranty issues using that grade even with an oil change history at the dealership. That's funny. I just posted this on NASIOC. The Owner's Manual does state...
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    PUP 5w-30 - 4,000 miles - 2017 WRX STI

    2017 STi owner here as well. I asked my dealer about this, and they told me I was fine using an API approved 5w30 even if it isn't the exact API SN spec. I'm using Motul X-Clean 5w-30 - https://www.motul.com/us/en-US/products/8100-x-clean-5w30 - which had the highest HTHS at 3.5 of really any...
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    PP 5W30, 8,213 miles, '01 Grand Prix GT 3800 V6

    Scanners like the HP Tuners suite can log all sorts of different parameters, including knock. http://www.hptuners.com/products/vcmsuite.php Side question: How can anyone living in Grand Rapids drive a stock Grand Prix with ZZPerformance in town? I wouldn't think a stock L36 should see...
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    Amsoil Euro 5W-40, 5,000 miles, 2010 VW GTI

    Originally Posted By: Finklejag Originally Posted By: BobFout Originally Posted By: Finklejag I didn't see the makeup oil. I would assume it was .5 quarts? This oil is low SAP. I wouldn't use it in my GTI. Given the number of GTIs in Europe running mid-SAPS 502.00/505.01 and low-SAPS...
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    Oversized for 3800 II, PF-52 insted of PF-47?

    The PF52 certainly fits, but I'm still wary. On cars with modded engines and stock mounts top and bottom, there is a TON of movement in that engine. The stock hydraulic lower mounts in that case aren't the most durable things in the world and can start to fail and collapse, lowering the engine...
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