Originally Posted by biodiesel
Originally Posted by edyvw
Originally Posted by biodiesel
I've been using real Redline 5W40, not the Euro approved version, in my 2018 GTI S since 2k miles and it's performing flawlessly...as it should considering it's a new car. I did a massive amount of research before choosing this oil and it had the best numbers of anything on the market. Lowest NOACK and highest HTHS I could find. I could care less if they've paid for the approved spec on it. I want the lowest carbon buildup over the life of the car as I plan to keep it for the long haul.
I'm not exactly sure what the factory fill is on these but it was extremely noticeable how much more "butter smooth" the motor felt on the first drive after the switch over to RL. I've been staying with a 5-6k OCI.
Approval price for VW is around $4,500. Redline did not submit that oil for approval because it cannot be approved not because of price.
Your engine will run smooth since it is very heavy oil, and turbo will need more spool time too.
If you are dead set on Redline, 5W30 is much better option.
Curious as to your thoughts on why it cannot be approved. Also, why would you recommend the 5W30 over the 5W40? I was trying to adhere best to VW recommendations which seem to be 0W40 or 5W40 especially in the Euro markets.
I shift at 2.5K rpm, and don't spool the turbo, until oil temp reads 200 degrees but definitely interested in your thoughts on running the thinner 5W30. Opted for the 5W40 and thicker film strength due to the severe Texas heat.
One thing about Redline is that is claims a lot of things, but no one knows whether that is true or not. Redline has in line up 5W30 and 5W40 (one you are using) that on paper have really good numbers. However, after market pressure Redline decided to obtain certain approvals and guess what happened? They did not send current line up, but developed new line up which all things considered are mediocre oils at best.
Euro approvals are looking at HTHS not as much to kinematic viscosity. As long as HTHS is above 3.5cp you are good. HTHS of 5W40 that you are using is 4.4 which will increase temperature, will not have cooling performance like thinner oils and will cost you at gas pump.
If you are dead set on Redline use 5W30. But, personally I would avoid using oil from company that claims meets and exceeds, and then needs to develop another line up to get approval. That means that they are lying about meets and exceeds.