LittleDabbie
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Is it dark blue or light ?
I like the clear oil so I can see when it gets tinted from contaminants.
In the bottle its pretty dark but if you just use a small 200-250ml worth its not that dark..
You'll notice when its contaminated ;)
get a one way check valve between the pump and oven/chamber
zero back feed issues unless you buy a pos
for example :
fwiw
I much prefer the tried and true method of disconnecting my hose/s From my chamber when my pumps not running but that valve would work too i guess :D
Ive only back fed my line i think maybe 3 times in 2 or 3 years im not all that worried about it :O
^^ Accidents do happen but not with blue pump oil :)
@velocity im not really sure what your ranting to me about ive specifically stated DO NOT use Motor oil.. Use only rotary vane vaccum pump oil and mineral oil to flush the system. ( Not to be confused with spirits ) ;)
There are " Agents " in my pump oil but there all anti-agents.. like Anti-foaming anti-corrosive anti-Id have to look at the bottle...
Synthetic built for rotary vane pumps blah blah blah... :D