 Hey guys, welcome to another video which is going to be should be short just me talking Just wanted to show you how long it takes for Oil pressure to build up after your car has been sitting for a long time. Now a long time can be a month also You know, well, I was gonna say years, but not really. Let's say you have a race car You know you use you kind of Put it away during winter time and you only use it for track days autocrossing When it's when it gets warm basically, right? So starting from say April all the way up to October Maybe even November, right? So the car will sit for Seven to eight months Which is quite a bit So let me reason for this video is not to just start your Engine after it has been sitting for a while because you will get what's called a a cold starts and During the cold start the first half a second maybe, you know, not not not long But it's enough to possibly do some damage to the bearings rod bearings main bearings Because there's not enough oil between the bearings and the journals because it has been sitting for quite some time, right? Now, I'll give you an example. I sometimes do oil pens, right and one time It was a V8 Some V8 car whatever It was a classic car and I did an oil pen the oil pen was smashed in so it needed a new pen obviously so But what happened was after taking the pen off and examining it it had cracks where the the rear main seal is and so what I was originally going to do was You know fix the pen somehow Just to fix the dent where the bolt is on the bottom or cut it cut the bar I actually ended up cutting off the bottom of the pen and welding on a new piece that I cut off from the from the new pen because those pens were not available and Blah blah blah blah blah, you know, they were too big so but the bottom and Fit right so but I had to do a lot of welding and stuff and also did Welding on the cracks and all that stuff and I had to paint it prime it paint it You know and all that so that took probably about a week or so during that week The oil the car was up in the air on a lift and the oil Kept on dripping for that week Obviously was drained before the oil pen was off and The oil kept on dripping for a week. It would keep on dripping for longer That's how how long it takes for that oil. That's everywhere, you know inside the heads around the black area Basically all over the engine, right? That's how long it takes for it to come down Now if you start your car every day or maybe every other day Then that that's not issue start your car Go go driving, but if it sits then That engine up top especially it's it's almost dry now. Obviously, there's gonna be, you know Some oil left something to be super dry like it was just built But you know it has a lot less oil is what I'm saying So to avoid that cold that first cold start after it has been sitting for for months and months Pull the fuse pull a mission fuse in the case of Subaru's it's very easy Actually, you want to pull the plug on the crank sensor, which is right in front underneath the alternator Then you just crank the engine until oil pressure builds up and that's it Then you can start it now on a classic car Well, you know American American muscle really where there is Where those cars have Carburetors chances are those cars will not start right away, you know after a second or two of cranking Actually, the chances are pretty big actually So really wouldn't worry about oil pressure on those kind of cars, right old carburetor cars But on a fuel injected cars They will start right up even, you know, it has been let's say the battery is good has been sitting for a year You're going so remember don't start your vehicles without any oil pressure really I know it's you know It's not gonna do much if you would but it helps. Okay save your bearings Let imagine if you were to do that I'm not a hundred times The cold start or or more You would I bet you you would do some Damage to the bearings because it's that split second once once the car when you just crank You know everything the rotating assembly just you know rotates slowly right just by the starter But at that split second where it starts the oil pump still needs to pump the oil So it's actually for this for a split second or maybe maybe even a second up to a second I would say there is no oil until that oil that you know the oil the oil pen needs to start pumping the oil kind of kind of priming itself then it needs to pressurize the system by Circulating the oil right throughout all the engine and then until and until it starts dripping from the top You know, I bet it takes a few you know some time, you know second to maybe even three I don't know but it happens so fast the crank will spin a few times at least 20 times 10 20 30 times maybe I don't know and During those Dry spins you may scratch the surfaces of the bearings So find out what you need to do to your to your car so it won't start Disconnect. Let's see some of the things you can do Pull the plug on a crank sensor if it's accessible pull a ignition fuse Pull a fuel pump relay or fuels if you do if you kill fuel it still may start actually so maybe test that Before you try it. Yeah, I'd say crank sensor and ignition sensor There's probably the way to go If you know a better way type in the comments. All right, so now I'm going to show you a short video of my 06 STI building up oil pressure After it has been sitting for about eight months Not a single start during those eight months. Just sat in the garage all cold and lonely You know, you'll notice something it takes as long as priming a brand new build engine All right, check it out and I'll see you next time all right cranking for the first time in eight months or so watch how long it takes for this thing to Disappear Building up oil pressure building good took a while, huh?