Kenlowe Hotstart HS4 2.7Kw 230v Engine Pre-Heater

Bought 2nd hand I thought it would be a good idea to test before fitting to my car. It heats up to about 88c and doesn't cut back in till 45c which I think is a bit low, and there's no way to adjust the differential. It took 45 minutes to heat my 1.7Cdti Vauxhall engine from -1c to 88c. Its really nice to start the car and have instant heat. There's an extra you can buy that puts the heater fan on once the engines reached temperature. Although it might be a bit tricky to fit on a car with climate control

[wanabee]

Just wondering what the flow rate of the pump is [liters per hour]? Is it written on the unit at all? Useful video, thanks!