Sunday 5 June 2011

Why do you have to wait for your engine to be cooled to change the oil?

It may seem like common sense and really for the DIY guy I get it, nobody likes getting burned. But why, then, can you take your car out for a 2 hour drive and then show up at a lube place and they will change the oil like it%26#039;s no big deal? Aren%26#039;t they a little concerned about getting burned also?|||if I have the pan set up and take the nut off with a wrench i never get burned|||I never waited for the oil to cool down but the warning is because DIYs almost never have a pit they can walk around under the car and stay out of the way of the hot oil. Some even suck it out with a vacuum pump.|||i worked in a quick lube for so many years and do you know how long we waited? pretty much as soon as the engine stops you can drain it. the hotter the oil is, the faster it will drain pulling more material from the pan with it. in the quick lube we just know what to avoid, sure i got kissed be a few cars over the years but..... we also had protective equipment for some of that.|||You DON%26#039;T have to wait for the oil to cool before changing it. You shouldn%26#039;t come into contact with the oil, so it doesn%26#039;t matter how hot it is anyway.





It%26#039;s actually better to change it when it%26#039;s hot, as it%26#039;s more runny. When it%26#039;s cold it%26#039;s thicker, so won%26#039;t drain as well, probably leaving more stuck to the engines internals.|||If you know you wont get burned then the best time to change oil is when it is hot or at least warm and shut off just now, because the dirt in the oil is suspended and will drain better.When the car sets overnight small pieces of junk settle to the bottom of the pan and might not drain out.I Always change my own oil and don%26#039;t forget the filter.|||you don%26#039;t.


oil should be changed while warm/hot so that the contaminants are suspended in the oil that will flow out with the oil that will be changed.


if allowed to cool,then the contaminants fall to the bottom of the oil pan and stay there just waiting for the new oil.





changing my own oil for 40 years i have never worried about getting burned and has never happened.|||It%26#039;s best to change the oil when the engine is warmed up as it all drains out better, if your afraid of getting burned wear a leather glove.