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I switched to Amsoil 0-30-the recomended replacement for 5w-20 in my o4 EX. After a week its used almost a quart! Thers no leaks. Theres 1500 miles on the car. Cant possibly be that much blowby?

 
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whos doing your oil changes check the bottom of your oil pan, with the car off touch it and see if there is oil film/buildup caused by undertorquing the drain bolt. Are new crush washers being used, and look at the oil filter....is it leaking maybe because it wasnt properly tightened

 
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I layed some newspaper down and parked it in the garage overnite. Nothing

 
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i would still look at the oil pan, also you could be leaking oil and you splash guard might be catching some of it. who does your oil changes??

 
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could your car just be a lemon?? any chance?? cuz i got the 2004 civic ex coupe manual.. and i have no problem what so ever with getting good mileage on it haha.. it's great getting such good mileage when gas prices are this high

 
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Do you have white smoke coming out of your exhaust?

 
Rep Power: 304

i do my own oil changes.....just change my car's oil for the 2nd time.....the amount of oil that drained out, was exactly how much i put in the 1st time 3 3/4 bottles

 
Rep Power: 311

If your burning oil excessively you'll see blue smoke coming out the tail pipe.

 
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me 2. i do my own oil changes

• mobil 1 5-w20
• new crush washer
• honda oem filter
• drain plug torqued (to i think 33 ft/lbs)

i never had less oil than i have come back in, if you are burning oil your exhaust fume color should be purple, white signifies antifreeze. if you think it blowbly, you can get a compression test on each cylinder done so you determine if that is true or not. i'm still wondering who did you oil change, maybe they didnt put the right amount in