An engine oil cap keeps things safe and reduces the chances of loss.
Oil cap off engine running.
My car has an automatic transmission.
If you leave i.
You and your friends cars have a lot of life left in them most likely.
Now let us know the possible damages of driving with oil cap off.
On the nissan sr20 engine a common fault is that the cam spray bars clog up which means the cams are starved of oil and it eventually causes an expensive failure when the swarf from the knackered cam shafts travels into the rest of the engine.
If your really concerned you can have a competent mechanic run a compression test.
So you take the cap off.
My car has 95000 miles.
But you will get some condensation of oil on hot parts around it and a mess.
Placing your hand over the oil fill cap is not a great way to measure blow by and determine an engine s condition.
If you have a regular car with the oil cap on top of the valve cover and you open it at idle all that happens is you get to watch the cam or rockers activate the valves.
It very much depends on the engine and where the oil cap is.
The danger is the dust that gets in.
Contrary to some o.
Looking to buy a used car i was told that if air is blowing out of the oil fill cap when open while the engine is running it s a bad sign but i m wondering if this could be just how this model works.
Very few cars if any will throw oil out that tube.