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#4402438 - 05/11/17 08:43 PM 2003 Honda Civic LX Oil Help
maverickfhs Offline


Registered: 12/28/16
Posts: 2006
Loc: VA
Hi guys, so we have a 2003 Honda Civic LX, with ~146k miles, runs like a champ. Had the car since 60k, now it's consuming oil, not sure where it's going though? Have to add almost 1 quart after every 500 or so miles. No smoke, no CEL and nothing. Just a bit background:

We replaced timing belt 3 years ago and somehow belt jumped and damaged the valves, ordered a replacement head from ebay and put everything back together. Then it started to leak oil from one of the seal in the cylinder head(o-ring). We fixed it and now no more leaks and it doesn't drip any oil either, but still consuming oil?

Where should we start to take care of it? So far we have used 5W20, occasionally 5W30, mixed with 5W20 in it.

Should we try to switch to a thicker oil or any known places to look for oil loss? I have 10W40 laying around, so as Shell Rotella 15W40.

Car is 100% stock, thanks for any of your help and input.
_________________________
2006 Civic EX 200K/AT
2006 Acura TSX 177K/AT

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#4402444 - 05/11/17 08:47 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
andrewp1998 Offline


Registered: 10/18/08
Posts: 853
Loc: MA USA
Change the pcv and try a HM syn oil? Other with more exp will chime in..
_________________________
2001 Honda civic HX vtecE- 5 spd,230k+

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#4402463 - 05/11/17 09:03 PM Re: 2003 Honda Civic LX Oil Help [Re: andrewp1998]
maverickfhs Offline


Registered: 12/28/16
Posts: 2006
Loc: VA
Originally Posted By: andrewp1998
Change the pcv and try a HM syn oil? Other with more exp will chime in..


Thanks, we have never touched the PCV on it. That would be a good first step, thank you.
_________________________
2006 Civic EX 200K/AT
2006 Acura TSX 177K/AT

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#4402471 - 05/11/17 09:13 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1663
Loc: Crawfordville FL
Change the pcv, try max life 10w-30 for an oci and see what you get. I'd also do a compression test to get an idea of how well the rings are sealing.

Recommend you find an oem pcv valve. The cheap ones are known to cause problems.

If it's not leaking externally then you have 3 main places to look. Pcv, piston rings, valve guide seals. HM oil can help the seals, and you can replace the pcv. If it's the rings then go thicker.
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4402475 - 05/11/17 09:17 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
maverickfhs Offline


Registered: 12/28/16
Posts: 2006
Loc: VA
Thanks for your suggestions. Is OEM the best bet? If so, we can go OEM. I don't see any visible leaks anymore.

First PCV valve, then compression test and then mix 10W40 with a 5W20, maybe?
_________________________
2006 Civic EX 200K/AT
2006 Acura TSX 177K/AT

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#4402484 - 05/11/17 09:30 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1663
Loc: Crawfordville FL
Originally Posted By: maverickfhs
Thanks for your suggestions. Is OEM the best bet? If so, we can go OEM. I don't see any visible leaks anymore.

First PCV valve, then compression test and then mix 10W40 with a 5W20, maybe?


OEM was good enough for the first 100k smile

You can get oem without a dealer. Amazon has a lot of stuff. Just look up the correct part number and do some comparison shopping.

I'm not a fan of mixing oils because you don't know what you actually end up with. Of the two 10-40 will slow consumption more but that may be unnecessary. See what the pcv does. Try a 5w20 maxlife or m1 HM. I prefer 10w30 unless it's cold enough that you need a 5w or 0w to crank the engine.

If budget is an issue you can try Supertech 10w30 HM for $15 5qt jug at Walmart. Add a cheap Supertech filter and you're out the door under $20
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4402488 - 05/11/17 09:33 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
maverickfhs Offline


Registered: 12/28/16
Posts: 2006
Loc: VA
Thanks for the reply, yeah we definitely missed on PCV valve just because it's not as obvious as other cars we have owned.

I have a bunch of oil in my stash, 5W20/5W30 Have some 10W30 too.

Maybe just changing the PCV resolve the problem. Compression test is on the to do list too!
_________________________
2006 Civic EX 200K/AT
2006 Acura TSX 177K/AT

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#4402507 - 05/11/17 09:50 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
dblshock Offline


Registered: 04/24/07
Posts: 2655
Loc: WI.
should have run a 0/40 to avoid this thread, try it now.. you'll still like it.
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#4402511 - 05/11/17 09:54 PM Re: 2003 Honda Civic LX Oil Help [Re: dblshock]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1663
Loc: Crawfordville FL
I'm very curious to see what results you get after replacing pcv
_________________________
2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30

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#4402532 - 05/11/17 10:18 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
SF0059 Offline


Registered: 08/06/12
Posts: 789
Loc: Lynchburg, VA, USA
Originally Posted By: maverickfhs


I have a bunch of oil in my stash, 5W20/5W30 Have some 10W30 too.


I agree, the first steps are to change the PCV and do a compression check.

If you want to use your stash prior to switching to a HM oil, I would recommend using Liqui-Moly Motor Oil Saver. You can get it on Amazon. I ran this in my Audi A6 with M1 0w40 and it stopped usage in its tracks.
_________________________
2014 Honda Odyssey EX-L/RES: 54K mi, M1 0w-40 & FU, VCMuzzler V2
2017 Mazda 6 Touring 6MT: 22k mi, M1 AFE 0w20, OEM Filter

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#4402737 - 05/12/17 07:59 AM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18177
Loc: Dallas,Tx USA
I'd go with 10W30.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4402797 - 05/12/17 08:51 AM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
Probably valve seals in that junkyard head.

Although these engines are notorious for head gaskets. Was the head machined before it was put on? How is the coolant level in the rad and overflow bottle?


Edited by mightymousetech (05/12/17 08:53 AM)
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Acura Tech
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#4410722 - 05/21/17 06:29 PM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
maverickfhs Offline


Registered: 12/28/16
Posts: 2006
Loc: VA
Coolant and overflow bottle, everything is good and we did replace the headgasket when we were putting the new head on. No overheating or loss of coolant issues.
_________________________
2006 Civic EX 200K/AT
2006 Acura TSX 177K/AT

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#4411183 - 05/22/17 09:15 AM Re: 2003 Honda Civic LX Oil Help [Re: mightymousetech]
ThirdeYe Offline


Registered: 02/23/07
Posts: 8155
Loc: Grand Rapids, MI
Originally Posted By: mightymousetech
Probably valve seals in that junkyard head.

Although these engines are notorious for head gaskets. Was the head machined before it was put on? How is the coolant level in the rad and overflow bottle?


The 05 model year was really the only one notorious for head gaskets. The 01-04 were pretty solid.
_________________________
07 Honda Accord - 598k - Valvoline 5W-20/Purolator Synthetic PSL14610

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#4411189 - 05/22/17 09:32 AM Re: 2003 Honda Civic LX Oil Help [Re: maverickfhs]
jeepman3071 Offline


Registered: 04/15/10
Posts: 4220
Loc: Storrs, Connecticut
My sister owns a 2005 Civic 1.7L non-VTec (value package model) with ~210k miles on it. It burns oil between changes, probably a quart or so. Using a 10w30 has definitely slowed it down. I replaced the PCV before switching to 10w30 and it didn't help. I wasn't really surprised since the old one looked fine. I'd start with the PCV first though.

My guess is valve seals or rings.
_________________________
2000 Jeep Cherokee 4.0L (180k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (32k) - Castrol Edge Euro 0w40, MANN HU816X

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