Redline 5w-40. 6k mile intervals. Probably much nicer than what my little GTI needs, but I like supporting local businesses and it's amazing oil.
I use strictly Redline oils for all my fluids except premix. Engine oil is Redline 10w40.
Redline recommended 10w-40 Full Synthetic for my 1.8 solid lifter JH turbo application and the tech guy suggested modern synthetics don't cause seal leakage (like OG synths of 25 years ago) and holds up way better than the 40w rating in hot temps and protects much better when cold than even the current crop of Castrol 20/50 dino oil I was running. I swapped over the M81 to the same Redline oil and have not yet noticed any new oil leaks yet.
I use only Redline for all my oils-fluids. For engine oil, I have used 10w40 consistently.
Used to use Motul, now switched to Red Line for the higher zinc content and high heat stability. I rallycross my daily so high RPM and high heat.
Redline 5w 40 since break-in, 254k miles later engine still going strong. Plenty of other repairs done, but no internal engine repairs required.
Completed my first oil change at 5k miles with Redline 0w20 and a Mann filter.
I had Blackstone do a Virgin Oil Analysis of Red Line 5w30 This sample of Red Line 5W/30 looks good in testing. The viscosity is just a little above our \"should-be\" range for unused 5W/30, but that's common to see with some brands, and it doesn't show any sort of problem or deficiency with this oil. The additive package is typical of Red Line. They use a lot of molybdenum anti-wear additive. There's also some silicon, which is good to know about since silicon can also show dirt in used oil samples. It's an anti-foaming additive. No moisture or solids were found. This oil is in serviceable condition.
I've run Redline in several previous vehicles.
I run Redline 5w-40. I do not use the 'Euro' formula version, but the regular 5w-40 meets the VAG oil specs for a (2012) TT-RS. I used to run Mobile 1 0w-40, but I believe that Redline, Amsoil, Motul, and a few others are a higher quality oil (ex: Ester base stocks for Redline and Motul 300v).
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