Pr/o/ tip: Always pre-fill the oil filter. If your system doesn't allow this, you don't have a real car.
>>28636315>you don't have a real car.Source?
>>28636318Deez
>>28636315Prefilling does nothing.Your bearings will be fine as your engine builds oil pressure.Rings are always the first to go in a properly maintained engine.This is nothing but boomer lore.
>>2863635690% of engine wear is due to cold starts when the oil has drained off of rings/bearing surfaces (fact).Having to pump half a quart of oil before it even enters the system on a cold start is 2x the wear (fact).
>>286363592x0=0
>>28636315Its irrelevant. Show me two engines, one that pre-fills and one that doesn't.
>>28636359so it’s just a question of filling the filter with oil before or after attaching it to the car. you should have the same amount of oil in the system either way.
>>28636356and the boomers were right. it is best practice in vehicle maintenance and a proper vehicle should be designed with this in mind.
i was taught this is only really important on turbocharged engines
>>28636356>Prefilling does nothing>Your engine will be fine as your engine builds pressureWhat pressure do you think your engine builds while it fills a 500cc filter with a 50cc per second oil pump?
>>28636393Did you even bother thinking about why?
>>28636315Waste of time. Pros do oil changes with a warm engine to get it flowing out faster. All of the bearing surfaces will still be slick in the 20min between pulling the car into the shop or onto ramps and finishing the oil change. And with an empty oil filter, you will have normal oil pressure within a couple seconds of starting the engine.The real protip is to wipe a little oil on the rubber o-ring on top of the filter so it doesn’t get fucked while tightening the thing. Always lube o-rings before installation.
>>28636399I've never seen a car take more than 2-5 seconds to register oil pressure after a filter change. It sure as hell isn't taking 10.
Don't talk to me or my car ever again.
>>28636359>90% of engine wear is due to cold starts when the oil has drained off of rings/bearing surfaces (fact).no, 90% of engine wear is due to working below normal working temps, not at startupthe same boomer lore that tells you to prefill filters also tells you to start the engine and let it idle for half an hour. one has negligent efect on engine longevity, the other decreases it drastically
>>28636403sure, the logic being to not let the impeller run dry
>>28636406>The real protip is to wipe a little oil on the rubber o-ring on top of the filter so it doesn’t get fucked while tightening the thing.They always say to use clean motor oil to do this but I'm a bad boy. I use dirty oil >:)
>>28636359Incorrect. Half the cars with upside down oil filters would have this issue. They do not.Residual oil is enough to maintain things. As long as you don't rev bomb it immediately after starting after an oil change, you're fine.
>>28636421Is it best practice to idle for 30sec to let the oil build pressure and then drive off and keep below 3K RPM then?
>>28636430same
>>28636359what a load of shit, that comes from oil not flowing due to cold temps and that has more to do with you being a dumb fuck and not having the correct weight of oil in the engine relative to temps you live in, not having your oil filter empty for 0.2 seconds while the car turns overyour oil pump will fill that filter by the time the engine is running
>>286363592x the wear on one cold start out of many hundreds a year doesn't sound like a lot...
>>28636356Apparently it's not a meme, I apologize for posting Jew-Tube.https://m.youtube.com/watch?v=939WTeorBnQ
>>28636421>90% of engine wear is due to working below normal working temps, not at startupwhen are engines below normal working temps, anon?
>>28636315Oil filter?
but oil pressure light turns off in the same time whether you prefill or not ...
>>28636651Gee, I wonder.
>>28636359You are a dumb faggot (fact)You suck cocks (fact)
>>28636651There's a gauge on your dash that tells you exactly this information.
>>28636877>>28636935Do you fucking retards know what a rhetorical question is?The answer is at startup. An engine is below normal working temp after a cold startup.Fuck.
>>28636935NTA, but most of those lieSome blatantly
>>28636954Yes after startup, not at startup.
>>28636972Is there some instant where the engine is magically up to temp as you're starting it?
>>28636975Yes, when I've just driven it.
>>28636978Not a cold start.
https://www.youtube.com/watch?v=AQ_Gt0yPlO0tldr it doesnt fucking matter
>>28636315Prefilling is bullshit. If it wasn't, you wouldn't have horizontally mounted oil filters.
>>28636985Are you sure about that?
>>28636988100%
>>28636988Yes, it's been debated in the car community for literal decades at this point.
>>28636996>>28636997Hm? Suddenly it smells like challah in here... Waaait a minute.
>>28637003see >>28636982You fucking retardor don't, I really don't give a shit
>>28636954How are you this genuinely braindead?
>>28637006Let's recap, shall we?>>28636359>90% of engine wear is due to cold starts>>28636421>no, 90% of engine wear is due to working below normal working temps, not at startup>>28636651>when are engines below normal working temps, anon?>>28636972>Yes after startup, not at startup.
>>28637005>>28636611
>>28637013Thanks for the assist.The mental gymnastics is amazing. Its like im on /pol/.
>>28637013Driving for ~15-20 minutes befrore your oil reaches operating temps is hardly ''at startup''
>>28637045Are you capable of reading words and understanding their meaning? Yes or No?Is the engine at normal operating temperature during and immediately following a cold start? Yes or no?
>>28637013yeah but what the fuck does the first 10-15 minutes of operation has to do with not prefilling the oil filter
>>28636430U bish
>>28636315What's the best engine oil to use if I don't prefill filters?
>>28636472I usually wait 30 seconds to 1min in winter and keep revs under 3k unless the other option is lugging ( going uphill in a shitbox that doesn't hit power until 6k rpm)
>>28636315>Imagine not having 60psi of oil pressure before start up
>>28636315When I open my door, before I even start the car, I hear an electric whirring from the engine bay. Is that what that is? 14 dodge dart aero.
Oil and engine maintenance are fucking gay I'm ready for an ev
If you can't hook a drill up to your oil pump and prime it yourself then you don't own a real car.
>>28637047>20 minutes>immediately
>>28637200So the answer to the first question is no, you're fucking illiterate. If you lack the brain power to keep track of a fucking 4 post conversation why are you even bothering to participate?
>>28636356>>28636315As someone who has done hundreds of oil changes myself and who has looked into this with countless fucking videos. I agree, it does nothing. It's not a BAD idea per se, but it offers a negligible improvement to empty. There is enough film on the bearings before oil pressure is fully developed in a quarter of a second to not make any meaningful difference at startup on the first start. That is to say the only way your are going to fuck your bearings is if your oil pump doesn't work. But also because you are at idle you aren't putting a load on the engine so again another reason this does almost nothing. It's not nothing. But it's again not significant enough difference to change anything. Keep in mind i've got vehicles in my fleet that are over 300,000km. So if that did something or my engine was at risk i'd have known by now. Take from that what you will.
>>28636364There would be no difference even at the micron level. Oil contaminants, not changing the filter, not enough oil, bad oil pressure etc... will all fuck the engine. But most engines are resilient through these things a few times. They don't catastrophically fail because there was an air bubble in the oil.
Guys, the oil pump is going to supply oil at 60psi+ in a quarter of a second. There is no difference to an empty filter vs. a full one. There is also residual oil in the oil galleries to negate this practice.
Oh and before I forget, I just remembered during the cash for clunkers thing, they were fully draining all oil out of the crank case before filling with silica gel and the cars STILL RAN for at least a minute before being completely fucked. Some ran for 10 minutes on NO OIL. There is enough residual oil in the system that no damage occurs for quite some time. If you look on youtube there is a video of a volvo going for like 15 fucking minutes because it refused to fucking die.
Found it. Look at this beast just shrug off 0 oil pressure lol.https://www.youtube.com/watch?v=iD0Pv6yyGek`
>>28637217>quarter of a second.It's actually 2-3 seconds.
>>28636421Would spinning the engine without fuel (and spreading COLD 10W40) mitigate any damage on a cold start?
>>28637279no because you need pressure
>>28636315>Always pre-fill the oil filter.Never noticed a difference. Sometimes I do it, sometimes I don't, really depends on how bored I am.
>>28637281>>28637279You can use an oil accumulator to store pressurized oil for a startup.
>>28637219>that no damage occurs for quite some time.Fucking moron.Damage is instant.Just because it didn't explode or seize doesnt mean it didn't wipe 100k miles of life off the bearings I actually shattered a lifter once. Debris went into the pan, seized the oil pump and snapped the oil pump drive shaft.I drove 60 miles before it really started tearing up the engine.That doesnt mean the first 20 miles caused no damage.
>>28636399>50cc per second Nigga what? Oil pumps are 8-10+ GALLONS per minute, typically +/- 5 at idle, that's over 315cc per second, aka the oil filter would be full in a literal second and a half at the lowest possible engine speed and everyone knows that almost all cars made in the last 50 years high idle at 2000+ rpm for at least a second upon startup.
>>28636315I prefill mine, although it's a cartridge type so I clean out the canister first.
>>28636315>thread about some guys getting shot over oil filter>some jokes about prefilling >now a meme thread about prefillingi like how random topics come and go in waves
>>28636982russians also tested it with a transparent filter housing. interesting to see just how quickly the oil gets through a dry filter, it really doesn't matter.https://www.youtube.com/watch?v=uK9jN5p2M40
>>28636359I hope you partially disassemble your engine and manually prime your oil pump with a drill every time you go to start it.
>>28637458ACCUSUMP CHADS JUST CAN'T STOP WINNING
>>28637435Same. What fun is the internet without a little shitposting
>>28636359yeah if you did the normal procedure of running the engine for 10 minutes before changing the oil oil will still be on all the bearings but if it's a cold start and it hasnt moved in months it might run for a whole 5 seconds with no oil pressure or more if you didn't prefill.
>>28636678>he doesn't grease his electric motor
>>28636472I wait until the RPM's drop and then I accelerate slowly until the engine comes up to temperature and then I drive normally. I do this in winter and summer
>>28636956Not your oil pressure gauge
>>28636315>spin-on filterYou don't have a real car.
>>28636315
>>28636985get on my level
>>28637281Allow me to clarifyI have an immobiliser wired to the fuel pump.I can crank my engine from the driver's seat without pulling fuses etcWhen I crank the engine, the starter motor spins the crank. The crank spins the oil pump. As there is no fuel, the engine doesn't start runningWould there be any benefit rotating the crank without engine starting to circulate oil?
>>28637821people do this after rebuilding an engine to fill the passages with oil
>>28637584Don't oil pressure gauges show real pressure from the sensor (if they exist at all in the dash)?
>>28637821Some manufacturers program this into the ECUThey wont fire if cold for 1-2 seconds of cranking.
My oil filter is mounted vertically.
>>2863647210 seconds is enough. The sooner you start moving the faster it warms up = less wear overall than waiting 30s to a minute.
>>28638304Nah.
>>28638304Of course. wrenchlets will disagree.
letting your car warm up has nothing to do with oil pressure. fuck i hate racelets.
>>28638556Nah.
>>28638607Ok, grandma. we hear you mumbling nonsense to yourself in the background
>>28638613Not all cars are the same, dingus.
>>28638064Yeah, and as soon as you see a noticeable drop-off at a specific rpm, you know it's up to temp.
>>28638558You are retarded. There's a very obvious reduction in oil pressure once the oil thins oit at operating temp. You don't "race" either faglord.
>>28638660>very obvious reduction in oil pressure once the oil thins oit at operating tempOn worn out shitboxes.Go ahead, post the lowest odometer reading within 100 feet of you.
>>28638861You're either baiting or really fucking retarded. Oil thins when it gets hot in every single internal combustion engine ever made regardless of wear. That's the nature of oil. Thin (hot) oil produces less pressure.
>>28637930Yes, when I replaced my power steering hose I was very careful to crank the pump to bleed/prime it before using engine power>>28638255Makes a lot of sense. Don't think my evo does that, if she's started at a good time in the stroke she fires right up>>28638304I generally wait for mine to go into low idle / closed loop, takes about 30 seconds>>28638558The temperature of the oil does play a part in the pressure
>>28637589shut the fuck up retard, spin on filters are superior
>plebs don't remove their oil and filter all in one go
