Oil for handpump

[Blackthunder]

Hello,

So I use a Chinese Bull pump to charge my PCPs. I regard the Bull pump vastly superior to my Hill MK3 pump.

However, the Bull pump needs to be liberally lubricated with silicone oil ( the manual sates this). I actually tried grease: the pump stops working.

But when I bleed off the air, some of the blackened oil comes out (it clearly contains carbon deposits). I also noticed that my Theoben Rapid had black crud on the inside.

Am I using the wrong oil? Should I use an oil separator?

PS: I am using a generic silicone oil.

 

[shutik]

It looks like you've used wrong oil, the type that explodes under pressure, hence you see carbon deposits.

I use this oil, only $2 and lasts forever https://www.amazon.com/gp/product/B0006O5GKY/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1 and have no problems.

 

[Blackthunder]

Yeah, I am not using pure silicone oil (as advertised). I just tested it and it burns quite easily with a sooty flame.

I guess I got ripped off.