Best oil for 1938 flying squirrel

[Tom Lamborn]

i have been looking at oils is the silkolene brand good, any recommendations for oil for the fuel and engine

thanks

tom

[PaulR]

Yes Silkolene 40 is fine

[Glyn Chambers]

What you want is Silkolene “Comp 2” for the engine, Potty

[Tom Lamborn]

Thanks

tom

[Tom Lamborn]

When you say 40, is that the chatsworth or donnington oil?

thanks

tom

[chris wastell]

I saw somewhere that Silkolene are doing a 2t 40 grade again, bit expensive but cheaper than a rebuild🙂

[cantilever]

The previous owner of my Flyer ran Silkolene Comp 2 through a reduction drive Pilgrim Pump and the engine has suffered major little end failure to both cylinders.

I can’t say the oil is the cause… but Ive read somewhere that fully synthetic oils aren’t good for bronze bush little ends.

[cantilever]

I’m going to use Millers Pistoneze for running in, then probably change to a good quality semi synthetic.

[richard norris]

I believe that Glynn’s outfit has run nicely for many years using Comp 2, certainly I’ve had no trouble with it, I reckon any oil is better than no oil.

[dave bushell]

I’ve been using  Castrol GP 50 for years without problems other than those caused by me!

[Ian Parsons]

I have used Silkolene Oils for many years. First Super Two 40 and now Comp 2. I personally have found that little end lubrication is poor on Scotts, phosphor bronze bushes help, and these do wear more than on other engines even when the engine shows no signs of nipping up or suffering distressed big ends.  If only we could have a needle roller little end.

[Tom Lamborn]

This is probably a stupid question but do you use the same oil in the oil tank as well as what’s mixed with the petrol or do you use different oils

 

tom

[Stan Thomas]

To pick up on Ian’s point about small end (lack of) lubrication.

‘Ears a goo (as we say in Birmingham),  some Scott owners believed in the practice of fitting “stuffer blocks” in the crankcase under the pistons to decrease the lower chamber volume and promote better gas transfer – which also had the effect of displacing the inert volume under the piston crowns thus creating gas flow to both aid cooling and increase small-end lubrication.

Other Scott owners didn’t bother and just listened to George Formby records.

 

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