Bozman52
Thread starter
- Joined
- May 21, 2024
- Messages
- 8
Your points about the coolant mix are intriguing. As it's near impossible to perform a coolant flush on this engine, it just isn't something I've thought about. Realistically, I'm not driving in a way that will overheat the engine, but the engine bay still gets incredibly hot, so anything I can do to bring it down a bit is an improvement. I actually installed turbo blankets (Funk Motorsports) about a year ago. They're the ones that wrap all the way around the turbos, not the blanket that just lays flat over everything. With the hot V setup of the engine, they were NOT fun to install. Absolutely no space in there.It is not running that hot for the coolant to reach a boiling point if diluted.
Diluting coolant is standard practice on the track. I run in my BMW on track 10% coolant in summer as the track is at high altitude and heat dissipation is far more important. BMW runs cooling based on need. The more you push it, the cooler it will run bcs. DME will put the thermostat and water pump into effective mode. If you baby it, it will run hotter, as DME is putting water pump and thermostat in efficiency mode. The problem is heat over time. These engines are hot V, and any heat that can be shed off is a gain.
Audi actually recommends in the manual in S/RS models to run 10% if tracking a vehicle, meaning where extremely high temperatures are expected.
I have come across a few guys who say to drive the car in sport plus mode exactly for the reason you stated about DMEs putting the engine into efficiency mode. I have tested this theory and can actually see the oil temps change a bit if I drive the car on the highway in standard vs sport plus mode. The temp is lower in sport plus, so I always put the car into that mode after she's warmed up properly.