Oil leak on 2012 Honda CBR 250cc

If that's the drainplug, the gasket may be leaking.

If you haven't already - change the oil and filter. When you do, install a new gasket on the drainplug. Clean the area well so you can keep an eye on it. Snug the plug down, but don't get carried away.

I'd recommend using Shell Rotella T5 10W-30 in it. Be careful when you install the oil filter. If it's installed backwards, which it can easily be, it will toast the engine.

Hi SpookyPotato and welcome to the asylum.
If you change the oil make sure that you put in the filter in the correct way. It fits in nicely both ways but only one is correct and if inserted with the wrong side it will starve your engine of oil. That mistake is probably the no.1 killer of CBR 250 engines. Just a heads up.

Schroeder said:

Hi Spooky Potato,
if you change the oil make sure that you put in the filter in the correct way. It fits in nicely both ways but only one is correct and if inserted with the wrong side it will starve your engine of oil. That mistake is probably the no.1 killer of CBR 250 engines. Just a heads up.

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Schroeder said:

Hi Spooky Potato,
if you change the oil make sure that you put in the filter in the correct way. It fits in nicely both ways but only one is correct and if inserted with the wrong side it will starve your engine of oil. That mistake is probably the no.1 killer of CBR 250 engines. Just a heads up.

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I just brought my bike to a shop and its being worked on right now and they guy said its probably the o ring where the oil filter is.

Well technically it's not an "o-ring" or a "gasket" per se. It's a crush washer that goes on the drain bolt that costs about $1. You should use a new crush washer every time you remove the drain plug to change the oil. It's very possible that the previous owner re-used the old washer on the last oil change instead of installing a new one.

OEM Part Number: 94109-12000

Part: WASHER, DRAIN PLUG (12MM)

You can get 35 crush washer for 1$ here in India, here price is 2 or 3 rupees in India.

TrueFaith said:

Well technically it's not an "o-ring" or a "gasket" per se. It's a crush washer that goes on the drain bolt that costs about $1. You should use a new crush washer every time you remove the drain plug to change the oil. It's very possible that the previous owner re-used the old washer on the last oil change instead of installing a new one.

OEM Part Number: 94109-12000

Part: WASHER, DRAIN PLUG (12MM)

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It sounded like the mechanic was saying the seal on the cover for the oil filter was leaking - and not the drainplug itself.

Close inspection should confirm if the oil is coming from the plug or the side of the engine where the filter is.

jkv357 said:

It sounded like the mechanic was saying the seal on the cover for the oil filter was leaking - and not the drainplug itself.

Close inspection should confirm if the oil is coming from the plug or the side of the engine where the filter is.

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Well the mechanic is fixing my bike for $475. He said its a bad leak. He said the o-ring was floating around or whatever and wasn't in place and the case was cracked and he said something else that I dont remember lol. I just know when I drove my bike there and parked it. He took the bike into the garage not even 3 minutes later and I looked on the ground where I parked it at. And there was a **** ton of oil.

Could be jkv357, but the pic the OP provided sure looks sketchy to me as well. It almost looks like a simple flat washer larger in diameter than the OEM drain plug washer was used and there's what looks like fresh oil on the drain plug bolt (which may or may not be the OEM one as well.) Then again that's a lot of oil on the bottom of the crankcase for a bike the OP's only had for 2 days if it were just a leaky drain bolt. I'm assuming he bought it used, so who knows what problems and solutions the previous owner might have experienced. Will be interesting to see what the problem actually was and what's involved in the dealership's $475 fix.

Cleaning-off the oil on the engine and parking the cycle level should tell you pretty quickly where the leak is if it's dripping that much oil.

Hopefully the OP has been keeping track of the level. They don't hold that much.

I was thinking the drainplug was the culprit as well. Shouldn't be a $400+ fix unless something major is damaged.

jkv357 said:

Cleaning-off the oil on the engine and parking the cycle level should tell you pretty quickly where the leak is if it's dripping that much oil.

Hopefully the OP has been keeping track of the level. They don't hold that much.

I was thinking the drainplug was the culprit as well. Shouldn't be a $400+ fix unless something major is damaged.

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He said it was pretty bad. It was the engine cover gasket. He had to order a bunch of parts. I saw what was wrong with it, he said it looked like someone filed it down or something. I don't know how to explain it sorry. It was dripping all through the side. Since I bought it the oil level has stayed pretty much the same. The guy who I bought it from said everything worked fine. He won't respond back now lol. He said he was in the army or something and was going to Florida last Sunday. The mechanic also said new oil was put in the bike. I haven't put any oil in in. He said the bike will be done when ever the parts get here maybe a week or a month.

Stuff like that was the exact reason why I wanted my bike new. Too many chances the previous owner "fixed" things himself.

Schroeder said:

Stuff like that was the exact reason why I wanted my bike new. Too many chances the previous owner "fixed" things himself.

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Ya man makes sense. Finally getting warm here. Wanted a bike desperately. Lmao

I'd ask to see the broken parts when you pick it up.

Not sure exactly what the mechanic is saying is damaged, but it would have to be a fairly major part to cost $400+ to replace.

Makes you wonder if the original owner installed the filter backwards at some point and then managed to get it running just good enough to make it someone else's problem.

TrueFaith said:

Makes you wonder if the original owner installed the filter backwards at some point and then managed to get it running just good enough to make it someone else's problem.

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Let's hope that's not it!

jkv357 said:

Let's hope that's not it!

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Well everything else worked perfectly. It's just the oil leak. But I hope u guys are right

From the sound of things, maybe the o-ring that the mechanic speaks of is the seal that goes on the valve cover around the spark plug hole. It's pretty easy to misalign the valve cover gasket, especially the part around the spark plug hole. If the o-ring seal around the spark plug hole is misaligned, the engine will spew oil quite a bit. If this is the culprit, shouldn't cost $475. Maybe $150 including parts and labor.

TheoR said:

From the sound of things, maybe the o-ring that the mechanic speaks of is the seal that goes on the valve cover around the spark plug hole. It's pretty easy to misalign the valve cover gasket, especially the part around the spark plug hole. If the o-ring seal around the spark plug hole is misaligned, the engine will spew oil quite a bit. If this is the culprit, shouldn't cost $475. Maybe $150 including parts and labor.

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He said the parts were 175 and the rest was labor. 90 dollars an hour for labor. He called me last Friday and said my bike will prolly be done this Friday. I'll let you guys know what the problem was lol.