tbones
Weekend rider
Posts: 64
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Post by tbones on May 15, 2022 21:01:20 GMT 1
I’ve been running my new to me 350lc for a few days now and thought it time to top up the oils
toped up the engine/gearbox oil with silkolene light gearbox oil.knowing exactly that’s what the previous owner used.
he also gave me two bottles of Motul 710 and when I went to top the running oil reservoir to feed the oil pump I could see it was a red coloured oil.
the new bottles of Motul 710 are more of a green colour can I add to the tank to top up.
Am i right in thinking different brands use different colouring and it’s ok to mix.
thank for help
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Post by chrisg on May 17, 2022 11:29:51 GMT 1
Cant be 100% sure what the previous owner put in, but id guess youll be ok. If your in any doubt, maybe flush the system and then start from there.
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Post by Chewie01 on May 17, 2022 12:51:31 GMT 1
As far as I know Molul 710 has always been green, so it must have something else in the tank. I would also second flushing the system out and starting a fresh with 710.
When I got my bike I did the same and found all kinds of old crud in the bottom of the tank.
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Post by arrow on May 17, 2022 12:58:24 GMT 1
As far as I know Molul 710 has always been green, so it must have something else in the tank. I would also second flushing the system out and starting a fresh with 710. When I got my bike I did the same and found all kinds of old crud in the bottom of the tank. Agree with the flushing if history is unsure. These bikes are old now, any debris in the system can end up in the check valves in the oil pump, causing the usual issues. Just a thought, Motul 510 was red, did he mean this? No problem mixing. |
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tbones
Weekend rider
Posts: 64
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Post by tbones on May 17, 2022 16:17:21 GMT 1
That’s very helpful everyone.
asking around on other forums. Not as good as this one obviously
people are telling me it would be fine to pour in with out draining
as long as I’m 100% sure it is a well maintained bike by it’s previous owner.. Which it is.
im not being lazy about draining the tank
It’s just I have never done this before on a bike and just don’t know where to start
but I’m paranoid if I do it wrong there will be a Big Bang
in my very distant memory of riding LCs I just recall adding good but probably different brands as and when I needed it.
never empty between the brands
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Post by arrow on May 17, 2022 20:23:55 GMT 1
Not being funny, but if you can tension a chain (for example) you can drain an oil tank.
However, once there are debris on the valve seats they are most unlikely to come off with any continued running. A full strip down of the pump is required to do the job properly.
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avb
Thrash Merchant
andys vapour blasting
Posts: 385
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Post by avb on May 17, 2022 21:20:05 GMT 1
had belray oil in mine and that was green smelt lovely
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tbones
Weekend rider
Posts: 64
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Post by tbones on May 18, 2022 5:29:51 GMT 1
Not being funny, but if you can tension a chain (for example) you can drain an oil tank. However, once there are debris on the valve seats they are most unlikely to come off with any continued running. A full strip down of the pump is required to do the job properly. I guess I was worried if I drain and refill I might somehow get a air lock in the pump once refilled |
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Post by arrow on May 18, 2022 6:40:44 GMT 1
There is a bleed screw on the pump, for such purposes. The outlet pipes can stay in situ and then they won't need to be bled. 👍
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tbones
Weekend rider
Posts: 64
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Post by tbones on May 18, 2022 18:23:20 GMT 1
Thank you all.
Now awaiting the Haynes rd workshop manual I purchased on eBay 👍
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Post by arrow on May 18, 2022 19:18:45 GMT 1
Thank you all. Now awaiting the Haynes rd workshop manual I purchased on eBay 👍 Chuck it in the bin when it arrives, and keep asking questions on here. |
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tbones
Weekend rider
Posts: 64
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Post by tbones on May 18, 2022 20:23:50 GMT 1
I guess I could keep it to burn in the winter months to keep warm
As all spare cash and probably part of the future housekeeping money has been spent on the new bike..Whoops 🤭
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Post by stirling11 on May 19, 2022 11:13:48 GMT 1
Motul 800 is red in colour, it's a premix oil, however it could be any brand really
To be safe just drain the old oil out and flush the lines, lets face it you're only chucking away 2 or so litres, so not a big waste and you've piece of mind knowing the oil is new clean and not mixed with something it maybe shouldn't be mixed with
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Post by JonW on May 19, 2022 14:09:08 GMT 1
Thank you all. Now awaiting the Haynes rd workshop manual I purchased on eBay 👍 Chuck it in the bin when it arrives, and keep asking questions on here. Haha Too funny. Tho in reality the 'Haynes Book of Lies' is always worth having  (do search on here for the mistakes in it tho and note them in the book) |
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