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Bunzena |
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Bunzena Derestricted Danger
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Bhud |
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Bhud World Chat Champion
Joined: 11 Oct 2018 Karma :
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Posted: 18:26 - 05 Nov 2022 Post subject: |
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I've never seen any manual, whether manufacturer's own, or Haynes, that advises to put grease on the oil filter seal. The O-ring seal is designed to hold oil and seal up any leaks.
On the type of oil filter which is fully enclosed, I can't think of any purpose for slathering grease on an oil filter seal.
If the technician routinely does this with fully enclosed oil filters, then I believe that in the past he's had problems caused by O-rings that didn't seal, either because they have come loose while tightening the oil filter and got twisted up, or because there was dirt in between the seal and the filter, or the seal and the engine. The proper way to avoid leaks is to clean up all mating surfaces, then fit the filter. Some people put fresh oil on the O-ring, because they believe the O-ring will swell and make a better seal like that. However, I've never heard of anyone using grease. Grease is not designed to form a hermetic seal anyway.
On some bikes (which use non-enclosed oil filters), the oil filter rests on a disc with a holed bolt to flow oil in the centre, which also holds a little spring that pushes up the oil filter. I don't know if don't have one of those, but in that case the disc has its own O-ring seal - different from the one on the oil filter. This must be replaced whenever the oil filter is replaced - you shouldn't just order an oil filter alone for those bikes, but one of those additional O-ring seals as well. I don't know if the technician had one to hand. If he didn't (just speculating here) maybe it didn't seal properly when he fitted the new filter, and it started leaking, so he had to dump the oil again and refit it, and tried to solve the issue with grease. If he did have one, then there's a bit of a knack to getting the new O-ring seal into the recess on the disc. Not rocket science, but everything has to be clean and dry, then you coax it in with your fingers. It pops out here and there. If you aren't patient then you may be tempted to use grease as a sort of glue to stick the O-ring in place and stop it sticking out. That may or may not work, but it isn't necessary. |
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Bunzena |
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Bunzena Derestricted Danger
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stinkwheel |
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stinkwheel Bovine Proctologist
Joined: 12 Jul 2004 Karma :
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Posted: 19:50 - 05 Nov 2022 Post subject: |
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Grease is "engineers glue", commonly used to hold things like an o-ring in place while they are put where they are supposed to be. The o-rings on oil filters are designed to cope with hot engine oil, grease is pretty much just thick oil so a smear of grease on the o-ring on a filter will not do it any harm.
In my experience, if a filter o-ring on a modern japanese bike is going to leak, it will do it almost immediately and in large quantity.
A loose (or worse, stripped!) sump plug is super dangerous though, first it dumps oil under your rear tyre, then -if you manage to stay on- it seizes your engine. ____________________ “Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles. |
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Robby |
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Robby Dirty Old Man
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Bunzena |
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Bunzena Derestricted Danger
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stinkwheel |
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stinkwheel Bovine Proctologist
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Bunzena |
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Bunzena Derestricted Danger
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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Kentol750 |
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Kentol750 World Chat Champion
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Bunzena |
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Bunzena Derestricted Danger
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MCN |
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Bunzena |
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Bunzena Derestricted Danger
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Robby Dirty Old Man
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Easy-X Super Spammer
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Bunzena |
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Bunzena Derestricted Danger
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gbrand42 |
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gbrand42 Could Be A Chat Bot
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Pete. Super Spammer
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A100man |
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A100man World Chat Champion
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xX-Alex-Xx World Chat Champion
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Bunzena |
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Bunzena Derestricted Danger
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fw750x |
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fw750x Renault 5 Driver
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
Joined: 16 Aug 2013 Karma :
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Posted: 19:35 - 08 Nov 2022 Post subject: |
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THEIR. ____________________ trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050 |
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Old Thread Alert!
The last post was made 1 year, 162 days ago. Instead of replying here, would creating a new thread be more useful? |
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