Oil Filter Cover - Gasket - Honda CBR 300 Forum
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post #1 of 13 Old 10-12-2019, 08:18 AM Thread Starter
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Oil Filter Cover - Gasket

Hey all..


Just wondering.... The gasket that is used on the oil filter cover.. do you guys reuse it, or just replace it with every oil change?.. Cost is not the issue..

Just looking to see if you generally replace it with every oil change, or every other oil change etc...

Thanks...
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post #2 of 13 Old 10-12-2019, 10:27 AM
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I reuse it- but I keep a spare
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post #3 of 13 Old 10-12-2019, 12:13 PM
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I reused the original gasket for 3 oil filter changes on my CBR250R, and it was still in decent shape at the 4th oil change when I replaced it with a new gasket.
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post #4 of 13 Old 10-12-2019, 08:42 PM
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I agree, its good for at least 2 or 3 oil changes but be very delicate and gentle with it. Also the oil bolt washer is good for about 3 oil changes as well I think. Some people say to turn the oil bolt washer inside out (not sure the proper terminology but I think you understand what I am saying).

I will tell you a story from another forum:

Dude was reusing his oil bolt washer for like the 10th time.

He noticed some small droplets of oil so he figured "Must not be tight enough" so he torqued it down tighter.

He noticed some small droplets of oil so he figured "Must not be tight enough" so he torqued it down tighter.

He noticed some small droplets of oil so he figured "Must not be tight enough" so he torqued it down REAL tight. Used all his strength.......

Heard a loud CRACK! Oil started gushing out! Like a torrent!

So the lesson learned is dont "push it" when it comes to reusing the washer. 3 times maximum.

2016 CB300F - 8000 miles - 100% stock config

Last edited by King CobRa; 10-12-2019 at 08:45 PM.
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post #5 of 13 Old 10-12-2019, 11:16 PM
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I replace it every time. Drain plug washer every other time. Just seems the reasonable thing to do. It’s not like either of them cost any real money.
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post #6 of 13 Old 10-13-2019, 06:00 AM
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I never changed any of them. Must've got lucky on the leakage front.
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post #7 of 13 Old 10-13-2019, 10:04 AM
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I decided to order one of these things similar to Fumoto Valve because its on sale only $18.43 compared to Fumoto $26




With these no more drain bolt or bolt-washer to worry about in the future.

If you check the Amazon price history this is the cheapest price it has been all year 18.43

2016 CB300F - 8000 miles - 100% stock config
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post #8 of 13 Old 10-13-2019, 12:35 PM
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You can purchase a pack of the copper washers at any autozone or such for nothing. Good to have in the workshop. Without replacing it is a good idea to anneal the washer by heating it up to slightly glowing ( I use a map gas torch if I'm not replacing the washer, which I do almost every time) and letting it cool gradually. It will re-soften the copper and allow it to seal better. As for tightening the drain plug, if you are not an experienced wrencher, I suggest a torque wrench so you don't have to learn how to replace the sump pan. Good insurance.
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post #9 of 13 Old 10-13-2019, 02:21 PM
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My concern is how many times can the oil bolt threads support 10 years worth of oil changes before they get worn out or cross-threaded? These Fumoto valves literally last a lifetime, you can keep reusing it on future motorcycles or cars so that is how I talked myself into buying it. And no more burned hands from the hot oil. But Im keeping the old bolt to put it back in when I sell the motorcycle. Im planning to keep it 10 years and I wonder if anyone will even want to buy my CB300F in 2029? We shall see

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post #10 of 13 Old 10-13-2019, 02:34 PM
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Well, if you think about it, most folks don't ride 10k miles a year (of course some do) so realistically your only changing the oil 1 maybe 2 times a year (so that's 10 maybe 15 changes in 10 years). I wouldn't worry about the threads if properly torqued down. They should last the lifetime of the bike. I've been riding on the street for 28 years and never had an issue. Now, what I do worry about with the little gizmo shown is how far does it hang down under the bike? I would hate to have something hit that (curb, rock, etc) and rip that puppy off. If that happens, again, you are learning how to replace the sump.
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