After a car (petrol) has had a long journey is it better to leave it running for a few minutes to cool down or turn it off to cool down! Im not sure if the radiator would cool the car quicker or would having the engine running keep things hotter than letting it sit and cool.
clark20,
Jan 18, 5:40pm
Unless it's a turbo just shut it down
pandai,
Jan 18, 5:40pm
Depends on the nature of the long journey.Moving through the air keeps the engine cooler than sitting idling.
cathair,
Jan 18, 5:43pm
This is just hypothetical. Say it was from Wellington to Auckland. Free run no traffic jams. What would cool it faster!
jsbike,
Jan 18, 5:49pm
in theory the engine should never go over the thermostats set temp. so after it has reached its running temp, a 2 min or a 2 hour drive wont matter, it will be the same temp at the end of the drive. just turn it off.
cathair,
Jan 18, 5:53pm
Ah good answer! Next question. I need 3 make and models of cars that have "crossflow radiators" can anyone help!
im_andrew,
Jan 18, 5:54pm
Is this in a MITO test book!
jsbike,
Jan 18, 5:55pm
some subaru's, a wrx i worked on one had one
cathair,
Jan 18, 5:56pm
Not the first question
ryans,
Jan 18, 7:31pm
Ford Falcon XY, XA, XB, XC (the XA, XB and XC are pretty much the same model, just different revisions)
carmedic,
Jan 18, 7:50pm
Virtually any modern European car??
franc123,
Jan 18, 7:57pm
You mean XD onwards, pre XD were all downflow, not crossflow.
cathair,
Jan 18, 8:14pm
thanks all!
ryans,
Jan 18, 8:27pm
I'm pretty sure the straight 6s with air conditioning and V8s were cross flow. The radiator fitted in my XC Fairmont is cross flow.
petermcg,
Jan 6, 11:57am
Dont forget that it is not the water that cools the engine it is the air, The water is just a heat exchanger.
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