Quote:
Originally Posted by jpliddy
hi dave woud you do the auto oil change when the engine is hot or cold if its cold woud the rubbish/sediment have gone to the bottom of the sump overnight so woud come out better or when hot its moved rubbish round so that makes it come out better . just wondering which is best
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The best time to do it Jim is when the gearbox oil is hot. Sounds like i'm splitting hairs there and to a point i am. The engine warms up quickler for many reasons, two obvious reasons are that is where the burning of fuel happens and it has a thermostat to help get it up to temperature and maintain it there.
Take the car for a run of 5-7 miles to get the transmission nice and warm and the fluid well circulated and then drain it. Be careful of the hot fluid though!
I like to decant the drain pan into an empty, clear container such as an old 5L screenwash or antifreeze tub.
That way i can put it to one side and let it settle and see what dirt falls to the bottom after.
It's also easier to see the true colour of the fluid, a good way is to dribble some fluid onto a plain white kitchen towel as this shows up any dirt held in suspension as well.
