I accidentally put the wrong fluid in my car

What people tried

Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.

1. 1
   siphoning or turkey-basting out the reservoir tank
2. 2
   rinsing and refilling the reservoir with correct coolant
3. 3
   draining the system completely
4. 4
   drain and refill asap
5. 5
   Siphon out the fuel, refill with diesel, and open the fuel system near the engine
6. 6
   Drain the tank, fuel lines, pump, and injector lines, then blow out with compressed air and replace fuel filters
7. 7
   Get the vehicle towed to a shop to have the tank drained and the fuel system flushed

In their words

Unedited, most upvoted first, each linked to the thread it came from.