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Cruiser oil.

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Cruiser oil.

Post  kerabo on Mon Nov 12, 2018 7:37 pm

Can anyone recommend a quality oil that is suitable for the classic Cruiser with the separate tank?

I have gone modern with everything else but am led to believe these need a thick oil to seal the crank bushes ?

Thanks Ken
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kerabo

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Re: Cruiser oil.

Post  Neil Lewis on Tue Nov 13, 2018 12:30 pm

Hi

I use Miller's in my 1930 model 4b at 20:1 without issues over the last 3 year including 2 Banbury runs.

I use to get from the factory, but they don't offer that anymore there are re-seller around.

It is formulated for older machines.

I can let you to details if required. Drop me a pm.

Best regards

Neil
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Neil Lewis

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Re: Cruiser oil.

Post  piston 197 on Tue Nov 13, 2018 1:38 pm

Neil Lewis wrote:Hi

I use Miller's in my 1930 model 4b at 20:1 without issues over the last 3 year including 2 Banbury runs.

I use to get from the factory, but they don't offer that anymore there are re-seller around.

It is formulated for older machines.

I can let you to details if required.  Drop me a pm.

Best regards

Neil

Neil Ken has seperate oil tank rather than running a petroil mix @ 20 to 1 with crank fed automatic oiling, Yes Ken you need a straight grade oil as recommended by FB for this system as it form the crankcase seal as well as lubrication

JH
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piston 197
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Oils

Post  kerabo on Tue Nov 13, 2018 2:04 pm

Thanks Neil.
Sorry I should have made it clear that it has the separate oil tank.

I have looked in the handbook but the oils listed seem very old names. I have sent that list to an oil supplier to see what they come up with but thought I would ask.

Thanks Ken
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kerabo

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Re: Cruiser oil.

Post  piston 197 on Tue Nov 13, 2018 2:07 pm

kerabo wrote:Thanks Neil.
Sorry I should have made it clear that it has the separate oil tank.

I have looked in the handbook but the oils listed seem very old names. I have sent that list to an oil supplier to see what they come up with but thought I would ask.

Thanks Ken

Ken, yes it is going to mention Energol and Mobil etc., it is the grade that is important not the manufacturer if it states SAE 30 the make is not important just the grade any classic oil such as Morris will be fine if the correct grade
JH
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Oils

Post  kerabo on Tue Nov 13, 2018 2:09 pm

Cheers John
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Re: Cruiser oil.

Post  davin999 on Wed Nov 21, 2018 4:13 pm

kerabo wrote:Can anyone recommend a quality oil that is suitable for the classic Cruiser with the separate tank?

I have gone modern with everything else but am led to believe these need a thick oil to seal the crank bushes ?

Thanks Ken

Ken,just to ask have you stripped your engine down and cleaned out the oilways only i rebuilt a 1929 James with a 247cc autolube 3 years ago the engine had not been run for god alone how many years the oilways on that engine where quite small and needed a good clean one was completely blocked.

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Engine

Post  kerabo on Wed Nov 21, 2018 4:27 pm

Thanks for thinking about my engine.

I don't think I have to strip it but will remove and clean out the oil tank and thought I would blow the oil pipes through completely including into the crankcases.

Any thoughts on a first start up regards oil getting through and the correct amount. I believe a setting of 2 1/2 turns out is the place. I am tempted to start of with a premix as well.

Regards Ken
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pre mix

Post  piston 197 on Wed Nov 21, 2018 4:40 pm

Ken the pre-mix idea is ok but used with the autolube as well will over oil, the pre - mix will not lubricate the mains, so if you are going to use a pre mix make it a very weak 50 or 60 to 1 mix.

Cleaning out the oilways would be recommended, but an oil can pumped down the oilways may show whether there is a blockage or not? , if the pipes are removed and the oil pipe fittings are filled with oil and the engine rotated will at least see if the oil is being sucked in?
JH
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Oil feed

Post  kerabo on Wed Nov 21, 2018 4:54 pm

Cheers John

I will tread carefully on that one. So the cases or main bearings must be different on the ones that don't have the oil tank?

Regards Ken
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Main bearing

Post  piston 197 on Wed Nov 21, 2018 4:57 pm

Yes, the main bearing has the oil fed directly into it, there is a spiral groove in it, this forms a lab seal when this groove fills with oil,sealing the crankcase pressure, if you run that engine with pre-mix only and nothing in the autolube,the mains will be gone in a days riding !
JH
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Re: Cruiser oil.

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