1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

About to do a oil change and noticed the filter upsidedown

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Old Nov 21, 2011 | 01:23 PM
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About to do a oil change and noticed the filter upsidedown

is it all going to drip out when i remove it? anyone can point me to a D.I.Y? please
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Old Nov 21, 2011 | 01:46 PM
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punch a hole in the top of the filter, it will let the oil that is in it go back into the motor. Or you could change the oil after the car sat all night. (your supposed to change oil warm though)
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Old Nov 21, 2011 | 01:47 PM
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I'm sure there is a diy on here somewhere, but as long as you put a rag around the base and remove the filter slowly (so the oil will drain back into the engine) you will be fine. If you are really worried about spilling it then punch a hole in the filter with a screwdriver. Personally I don't bother doing that, but I've heard of people that do.

edit: cshaw07 beat me to it lol
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Old Nov 21, 2011 | 01:50 PM
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Originally Posted by Touring
is it all going to drip out when i remove it? anyone can point me to a D.I.Y? please
this is what it should look like.



and as for it all running out. if you drain the oil before you take the filter off you wont have much spillage
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Old Nov 21, 2011 | 03:05 PM
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thanks guys. 10w40 right?
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Old Nov 21, 2011 | 03:18 PM
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^there is much debate about what oil to run, I use 10w30 because mine see colder weather. Some guys go as heavy as 20-50, might not be a bad idea for you since you're in a hotter climate.
Again though, oil (what weight, brand, synthetic or not) is always a big debate
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Old Nov 21, 2011 | 03:36 PM
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From: https://www2.mazda.com/en/100th/
the rotary is not very picky about oil, anything wet and slippery works fine
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Old Nov 21, 2011 | 04:28 PM
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Originally Posted by j9fd3s
the rotary is not very picky about oil, anything wet and slippery works fine
+1 I've used rotalla t in my 82 rx7. Sold it and she's still kickin' it's cheap.
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Old Nov 21, 2011 | 05:10 PM
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I always let my oil pressure guage tell me what weight oil to use.
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Old Nov 21, 2011 | 05:30 PM
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Changed it out with 10 40 just cause the local mech. Said to. No big deal. Cars running fine.
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Old Nov 22, 2011 | 03:06 AM
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a little warning when knocking a hole in the filter prior to draining (which I do every time anyway)
do NOT punch a hole right thru the top CENTER!!
Apparently most filters have a metal disc in the top center, something to do with oil bypass, that can get knocked down into the oil feed tube = no oil flow = no motor.

I punch it in off-center -never had a problem.

Stu Aull
80GS
Alaska
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Old Nov 22, 2011 | 03:51 AM
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Originally Posted by j9fd3s
the rotary is not very picky about oil, anything wet and slippery works fine
+2 this!
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Old Nov 22, 2011 | 07:15 AM
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I've had spillage when punching a hole in the top of the filter. The best way I've found is to unscrew the filter until rubber seal just gets loose then leave it for a few minutes before unscrewing it all the way. Once you get a feel for it you can take off the filter without spilling a drop, keep a shop towel around it just in case, of course.
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Old Nov 22, 2011 | 07:59 AM
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^+1
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Old Nov 22, 2011 | 10:38 AM
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can u belive i had the car in the mechanic for 3 weeks to get a tune up and you know what he tells me when i pick it up???? ohh we forgot to change the oil....... LOL, you can only laugh.
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Old Nov 22, 2011 | 11:01 AM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Touring
Changed it out with 10 40 just cause the local mech. Said to. No big deal. Cars running fine.
i've run everything from 5-20 to 20-50 at the track and haven't felt/seen/heard a difference.

the only thing is that since the engine uses the oil to cool the rotors, it needs to be changed fairly often if the car is driven hard.
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Old Nov 22, 2011 | 02:54 PM
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Originally Posted by rwatson5651
I always let my oil pressure guage tell me what weight oil to use.
This is the right way to do it.
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Old Nov 30, 2011 | 12:33 PM
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If you use filters with an anti-drainback "valve" in them (basically a rubber membrane that moves out of the way when oil's going in the right direction) you won't have drip issues. My favourite is the Purolator PL14459. Changed the oil hot many times and never had drip issues. It also lets you pre-fill the filter with oil before putting it on, so that you can avoid that couple of oil-less seconds your engine has while it fills the filter. Not really a big deal, but if you're protective of your car's engine it's nice to have the option.

Jon
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Old Nov 30, 2011 | 08:31 PM
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just to put it out there, i usually filled every filter to the point where it stopped absorbing the oil before i put it on. so even for the filters that allow drain-back,i figure this should make the first start fairly harmless.
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