I've doubled my cam follower life, from 10k to 20k miles, by switching to LiquiMoly 5w40...and it costs less than Castrol full syn recommended by VW.
I ran the dealers Castrol for 20-30k miles. Switch to Motul and my temps went up easily 10°F, it would settle down at around 230°F. Catrol never went above 220 unless I was stuck in traffic. So Motul would creep up over 230 at times.
Then I switched to LiquiMoly Leuchteifeifafehffhefh. The oil temps better match Castrol and sit around 220F unless stuck in traffic. BUT the LiquiMoly gets up to temp much quicker than the Castrol ever did.
It is the same with both Redline 5W-40 and Liqui-Moly 5W-40. I usually run between 190 and 202 degrees for oil temperature.
Everyone pushes whatever brand they use but when you're talking group 4 oils you're splitting hairs to some extent because they are premo quality. I've run them all and if I had to pick I'd probably throw my hat in for Liquimoly Leichtlauf High-Tech 5W40. That's the full synthetic version. Watch out there is a synthetic blend version they sell now, not as good.
Decided to go back to (and probably stay with) Liquimoly Leichtlauf 5W-40 (the blue bottle that says fully synthetic).
Liquimoly in all my VW's. 5w40. Liquimoly in all my friends VW's as well. Everything from a Mk4 2.0, to a MK7 R, to turbo R32s. ****s the best.
I run LiquiMoly, zero issues.
I use the Leichtlauf High Tech Engine Oil (5w-40). It's TBN is quite a bit higher and I think the evaporation loss is lower.
I use 5W40, Castrol Edge, has the 502/505 certification, if it doesn't don's use it. You can use the 0W40 European Formula as found at Walmart; is also 502 certified.. This is a good all-year 'round oil.
Castrol EDGE 5w-40 is what I use.
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