radiantRX-7

iTrader: (1)

How many of you guys when changing the oil, put oil inside of the oil filter and swish it around? Is this really necessary? I usually just put some oil on the O ring before screwing it on.

IMPACT 7

I put oil on the O ring then just screw it on.

radiantRX-7

iTrader: (1)

Just wondering. I was watching a car show (forgot the name) on discovery channel, and the guy put oil in the oil filter and swished it around. I guess its no big deal.

tiger18

iTrader: (1)

lol,,,ive always filled the oil filter right up before quickly screwing it on (loosing a little),,, ive read that when you start a car with the oil filter empty it takes like 10 seconds for it to fill and in that time there is no oil circulation??? some one shed some light

airborne

how would you fill the oil filter before installing it when it mounts with the opening facing down?

tiger18

iTrader: (1)

lol,,,,,beleive me ive been doing it like that for 12 years, most of the cars ive done the oil filter is under the engine and you dont have to upturn the oil filter,,,
I did the rxy oilfilter only the otherday i removed the elbow filled up the filter then quickly upturned it only spilt a tiny drip (i swear ive read that u need to fill the filter,,,if im wrong then its 12 years of stupidity lol)

tiger18

iTrader: (1)

just checked the manual doesnt say anything about filling??? mmmmm

lilroach

Ive always done it, but i seem to be the only one from all the people i know to do it though. I think it helps with dry start, but in reality we're talkin about seconds. You would be surprised to see how much oil that little guy can take.

Bacon

iTrader: (12)

I personally put oil in my filter and let it sit till the paper media has fully wicked it up, I usually install it about half full of oil. that little filter can wick up nearly a half qt of fluid. (i use pureone) Yea it’s tricky but once you get use to it its easy and no spills. It originated from the V8 guys with their huge filters than can hold a quart of oil. Those can take a while to get full especially on the initial startup.
I also realize its only a few seconds, and the little bit of oil may only marginally help, but what the hell id rather try than just let it run w/o oil for a few seconds.
im 10 years in the stupidity club if not

amp

iTrader: (50)

for those that put oil in it... how do you keep it from leaking out
considering the oil filter is facing down.. or am i just not reading this post right...
im confused..

adam c

iTrader: (2)

Filling your filter with oil is a complete waste of time. One of the dumbest things I have ever heard. Guess what?? Your oil filter is empty every morning when you start the car. How is filling it one time going to make any difference? Completely stupid!!!

fendamonky

iTrader: (6)

I get the feeling this could turn into a Dino vs. Synthetic style debate...

I think it is entirely based on personal taste (in this case). I have, myself, been filling the filter every change since I learned to drive back in '99.. Granted, the 7 is the first car I have owned where the filter is UPSIDE DOWN.. I think it's a matter of preference. I was taught by my Uncle to fill it up, I always have, and I always will.

Granted, I won't be *completely* filling the filter to the top on the 7 (since what is not absorbed will spill anyway), but still, every little bit helps imho.

Improved FD

it's typically done with the large filters that mount under the car

waste of time for our dinky filter, you lose pressure for maybe a second

Sgtblue

iTrader: (16)

The oil pickup is in the pan, but the filter will fill before the pan emptys, so why would supply to the engine internals be compromised? Or am I missing something?
That said, with a new filter I always run the engine briefly and check the oil level again, usually adding about the volumn held by the filter.

rynberg

EXACTLY. The oil pickup is in the pan.....an empty filter is not going to cause the slightest bit of oil starvation whatsoever.

dgeesaman

iTrader: (7)

Well then you need to change my oil. I'll grant you it's never full, but when I change my filter is NEVER empty. Whattafrigginmess.

Dave

xthephilx

I beg to differ. The way I understand it, oil flow is:

Oil pickup -> Oil pump -> Oil filter -> Motor.

In that case, having oil in the filter would help.

At least this is the way it is on other cars that I've dealt with. The Rx7 might be different.

Sgtblue

iTrader: (16)

Actually, looking at the flow diagram on pg D-2 of the FSM:
Oil pickup-> Oil pump-> Oil cooler-> Oil Filter -> Motor internals.

So maybe....I think marginally , there might be something to this. But I doubt I'll be filling up the filter BEFORE tipping it open-side-down any time soon. If it was really a concern, a better way might be to pull the fuel pump fuse and crank the motor for a few seconds. But it sounds obsessive/compulsive to me. And that's a receipe for disappointment with this car.

adam c

iTrader: (2)

Dave,

I would bet that you are one of those stubborn people that insists on changing his oil after the engine has been running. Some people never learn . Of course there would be oil in the filter!! My point is that there isn't any oil in the filter in the morning, after the car sits all night. So, since we start our cars after they sit all night, and there is no oil in the filter, why would it make any difference to put oil in the filter when changing oil.

tiger18

iTrader: (1)

adam c ,,, i beleive you are wrong the oil filter has a spring and a seal inside it and from what ive been told when the pressure drops the seal blocks the main oil gally to stop the oil flowing out of the filter (its to keep oil within the system for cold starts ,,, have a look inside an empty oil filter you will see. :-))

Kento

You apparently have not heard of the "anti-drainback" valve on oil filters? It keeps much of the oil from draining back out of the filter after shutdown.

EDIT: However, filling the new oil filter before installation would take some patience, as you'd need to wait for the oil to drain past the filter medium into the outer cavity. So that action is a bit of waste of time, as oil pressure will quickly fill the outer cavity upon startup.

rynberg

I was wrong, you are right.

However, even if there is oil in the filter, it will still take a few moments for the pressure from the oil pump to force the oil from the filter to the engine. The difference in time it takes between the filter being empty or not is probably less than 1/2 second.

adam c

iTrader: (2)

No, I am not wrong!!!

I always use an oem Mazda filter, and I always change my oil after the car has been sitting overnight. It is ALWAYS empty. While the filter does have a seal, it does not keep the oil in the filter for a prolonged period.

tiger18

iTrader: (1)

Some one do a test,,, change there oil and dont fill the filter,,, then time how long it takes to get oil pressure on the stock gauge (also everytime i remove my oil filter its got plenty in )

adam c

iTrader: (2)

I have heard of them. Apparently you have never changed your oil after letting the car sit over night. Those valves don't keep oil sealed indefinitely.