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jesse135lee · 08-19-2011, 12:44 PM

I replaced my conventional oil with synthetic but did not replace my oil filter. will the leftover oil in the filter hurt my engine?

pushrod · 08-19-2011, 01:00 PM

Assuming you had a reason to keep the 'old' filter, vice changing it out, I'd say the few ounces of 'old' oil that was in the filter won't make a lot of difference. I'm guessing you don't have many miles on the filter.

Not knowing the model of the bike, but most engines have trapped oil in them anyhow (that is, it can't be drained completely).

I hope you used either a motorcycle-specific or a non-"energy-conserving" auto oil.

The Spaceman · 08-19-2011, 01:02 PM

No, it won't. Conventional oil can be mixed with synthetic. The contamination you left in the filter is bad, but it won't kill the engine.

The_AirHawk · 08-19-2011, 01:17 PM

Too late now, you'll have to scrap the bike.....

sarnali2 · 08-19-2011, 01:31 PM

****************STOP IMMEDIATELY! YOUR ENGINE IS ABOUT TO EXPLODE***************

The only thing you can do is remove the oil filter, drain bolt and spark plugs, take your garden hose and starting from the left inject a small amount of dish soap into each cylinder and flush until the water coming out the bottom is clear. Then invert the motorcycle and using the oil drain hole, back flush the engine until the water coming out each spark plug hole is clear. Then soak the motorcycle in warm salt water for 48 hours, remove the license plate then discard the motorcycle in an environmentally approved fashion. Instal the license plate on a new motorcycle and use only the correct grade of El Cheapo Wal*Mart oil in future.

The_AirHawk · 08-19-2011, 01:49 PM

Gone for Good, you think? Or will this one exhibit a Sense of Humour?

The_AirHawk · 08-19-2011, 01:52 PM

Quote:

Originally Posted by sarnali2

****************STOP IMMEDIATELY! YOUR ENGINE IS ABOUT TO EXPLODE***************

The only thing you can do is remove the oil filter, drain bolt and spark plugs, take your garden hose and starting from the left inject a small amount of dish soap into each cylinder and flush until the water coming out the bottom is clear. Then invert the motorcycle and using the oil drain hole, back flush the engine until the water coming out each spark plug hole is clear. Then soak the motorcycle in warm salt water for 48 hours, remove the license plate then discard the motorcycle in an environmentally approved fashion. Instal the license plate on a new motorcycle and use only the correct grade of El Cheapo Wal*Mart oil in future.

You mean in a manner similar to this?

Easy Rider 2 · 08-20-2011, 08:02 AM

Quote:

Originally Posted by jesse135lee

I replaced my conventional oil with synthetic but did not replace my oil filter. will the leftover oil in the filter hurt my engine?

NO.
But why would you do that in the first place ???

sarnali2 · 08-20-2011, 09:41 AM

Quote:

Originally Posted by The_AirHawk

You mean in a manner similar to this?

He forgot to turn the Mustang upside down to "back flush" through the drain hole, no wonder it didn't work....

The Spaceman · 08-20-2011, 06:35 PM

Quote:

Originally Posted by The_AirHawk

You mean in a manner similar to this?

Holy Sht, you think that one is real?

I wonder if he heard about flushing your radiator with a hose when the engine is running and got his fluids crossed.

A stunning bit of work there...no doubt.

08-19-2011, 12:44 PM	#1
jesse135lee Registered Member Join Date: Aug 2011 Location: kings bay, GA Posts: 1	will conventional / synthetic mixed oil hurt my engine? I replaced my conventional oil with synthetic but did not replace my oil filter. will the leftover oil in the filter hurt my engine?

08-19-2011, 01:00 PM	#2
pushrod Founding Member Join Date: Nov 2001 Location: Baja 'Bama Posts: 3,478	Assuming you had a reason to keep the 'old' filter, vice changing it out, I'd say the few ounces of 'old' oil that was in the filter won't make a lot of difference. I'm guessing you don't have many miles on the filter. Not knowing the model of the bike, but most engines have trapped oil in them anyhow (that is, it can't be drained completely). I hope you used either a motorcycle-specific or a non-"energy-conserving" auto oil. __________________ You would not understand, this is not how I am... I have become - Comfortably Numb.

08-19-2011, 01:02 PM	#3
The Spaceman Registered Member Join Date: Aug 2011 Posts: 1,352	No, it won't. Conventional oil can be mixed with synthetic. The contamination you left in the filter is bad, but it won't kill the engine. __________________ The Texas DOT has announced that: "Traffic accidents are caused by skid marks." The state DOT researchers found and documented a near-100% correlation between traffic accidents and skid marks. "Wherever we find these cars colliding," he explained, "we also find these skid marks."

08-19-2011, 01:17 PM	#4
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	Too late now, you'll have to scrap the bike..... __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...

08-19-2011, 01:31 PM	#5
sarnali2 Aging Cafe` Racer Join Date: Jun 2007 Location: Sittin' down by my window, lookin' at the rain. Posts: 8,132	**************STOP IMMEDIATELY! YOUR ENGINE IS ABOUT TO EXPLODE************* The only thing you can do is remove the oil filter, drain bolt and spark plugs, take your garden hose and starting from the left inject a small amount of dish soap into each cylinder and flush until the water coming out the bottom is clear. Then invert the motorcycle and using the oil drain hole, back flush the engine until the water coming out each spark plug hole is clear. Then soak the motorcycle in warm salt water for 48 hours, remove the license plate then discard the motorcycle in an environmentally approved fashion. Instal the license plate on a new motorcycle and use only the correct grade of El Cheapo Wal*Mart oil in future. __________________ "Carpe` Throttelum -Loud Suits Save Lives" "All the BMW riders in the room, I want you to leave. Now. Out. "

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08-19-2011, 01:49 PM	#6
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	Gone for Good, you think? Or will this one exhibit a Sense of Humour? __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...