- Objective:
- Maximum fuel efficiency
- Fits:
- all AHU/1Z TDI's
- ALH
- All older IDI's
- Part Numbers:
- In use/Tested By:
- David on his 1991 VW GTI TDI swap
- Alternative:
- stock 87° Thermostat
- Comments:
- Low operating temperature is known to hurt MPG, but there is no solid proof that higher temperatures will improve efficiency.
- Home
- High Temp Thermostat
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