Where is our resident Oil Filter Guru?? We need to know if there is so much difference between the Purolator filter and the Yamaha filter to justify having to use their high priced $13.00 filter.
I have no idea if the Purolator filter is equivalent to the Yamaha filter..... I use the OEM Yamaha oil filter because I know it works and I really don't want to bother trying to replace something that works...LOL....too many other things to re-engineer to be bothered with the oil filter. The OEM filters are really not that expensive when you order them in advance from University Motors in bulk. And the price becomes really reasonable when you can avoid an arguement like this.
There are a number of factors involved with the design and validation of an oil filter. Just because it looks the same and screws on does not necessarily mean it is the same or equivalent. Not saying that it won't work OK but just that there needs to be some specific testing done that is outside the scope of riding around the block to prove that it is adequate replacement. And no, you cannot just "tell by looking" whether the filter is OK or an equivalent replacement or not.
Just out of curiosity....Does Purolator list the FJR1300 as an application for that filter or has the Purolator filter become common because someone, somewhere decided it was OK and started using it.?? If that Purolator filter is not specifically listed as an FJR replacement filter then you might have problems at some point if there was an oil or oil filter related problem. Hard to convince a jury the filter was OK "just because..." someone on the internet said it was fine. Personally, I do not want to entertain the arguement either way so I just use the OEM filters. I KNOW those work.
I really seriously doubt that the oil filter itself had any bearing on a clutch failure, though. If an oil filter was a problem I would think it would show up in bearing distress or oil temps instead of a clutch failing.
Is there any chance that the engine that failed the clutch was using any coolant? Was the coolant level in the rad low or does the coolant level in the recovery tank drop requiring regular coolant additions to keep it full...?? I ask because ethyleneglycol and most clutch plates in wet clutches do not play well together. EG can cause the clutch material bonded to the clutch plates to simply desintegrate and fall off in chunks. Very common failure in automotive automatic transmissions when a transmission oil cooler in the radiator end tank fails and coolant leaks into the transmission. If the engine was using even a little bit of coolant it could contaminate the oil and clutch material and possibly cause the clutch material to desintegrate. I have never tested the FJR clutch material to prove that this is the case but I have seen LOTS of automatic transmissions clutch plates fail like this so I would not be surprised at all to see the FJR plates fail in the presence of EG. Any sort of internal coolant leak would contaminate the oil with coolant and potentially lead to this failure.
Any previous work done on the engine, side covers, cam cover, etc. where scotchbrite was used to clean up the gasket surfaces? Another potential clutch plate failure mechanism is the contamination of the oil with even tiny amounts of the dust from scotchbrite pads that would occur if they are used to clean up the side cover (generator) before reassembly.
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