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So there's a higher rate of circulation of a thinner oil. I'm always curious how does this help? I'm assuming oil circulation is helpful for heat at the min. For example if the oil creates one of those super thin surfaces between metals how would changing it out for different oil help?

So ignore the additives for a second. The 2017 US GTI calls forto 5w-40 (vw502) even if it's compatible with the other viscosities you mentioned. Meaning if you went to the dealer you'd get that. So let's just base the conversation on that. Don't you think a change from 5w-40 to 0w-20 is...

So the mk7 uses 5w40 and the mk8 R uses a 0w30. My warranty ends soon. Do you think moving the VW 504 0w30 is a good idea? I don't care about the fuel economy drop. What confuses me is the 40 weight on the mk7. I've never owned a car that was above 30. Even my 80s American cars were 5w-30 or...

I was wrong about the mk7 fuel requirements for a long time, you're right. I thought it required 91 but apparently it can use 87 with a reduction in power (reduced timing due to knock?) From their press release: "Regular unleaded (Stated hp and torque figures achieved with premium unleaded)"...

If you mean compound in the oil that's not what I got from reading a few studies. One study specifically said something like "Reducing the calcium had a significant impact on lspi". I believe they replaced it with more of that moly Mercedes stuff. Another study showed that magnesium as a...

Sure. And the lack of widespread failure shows that but.. Mk8 gti has a bunch of variables that all help lspi happen. 1. Direct injection 2. Turbo 3. Single scroll small turbo which provides low end torque (271 @ 1600rpm) 4. Calls for 87 aki octane 5. More likely to be driven aggressively...

Hi. I know I'm late but this oil has a pretty high calcium content. Isn't that quite dangerous in direct injection turbo engines because it will cause in cylinder knock and reduce the overall life

I know this is an old thread but things aren't as simple as "they don't make them like they used to" For example all current cars sold by Volkswagen in the US have cast iron blocks.