LMAO

Thanks...thats just what I am looking for.

This is what I use in the dashpot of my HIF44.

//www.amsoil.com/shop/by-product/compressor-oil/synthetic-compressor-oil-iso-46-sae-20/

I have used everything from 10W-40 to ATF and 3-in-1 20wt.  What I found is that when the weather is cold the oil is thicker and can cause drivability issues to a point where you need to re-adjust the carb for cold running conditions.  With the Synthetic 20wt I don't experience this.  It works for me but I know others have had positive results with other oils.

I was talking about throttle response and pick up as the slide moves.

Curious to know what difference you think changing the oil will make to the performance of the engine.

Ask 10 people what oil they use in their dashpot and you'll likely get 9 or 10 different answers, but less than half will know what the oil actually does and why.

I use 20wt Amsoil synthetic,  my crunch on second gear went away. 

Thanks Doug. I can get it at my local Lowes so I'll give it a try.  Not hung up on Syn at all. Just looking for something to get me the performance I'm after.

I've got a MED 1380 and having a bit of trouble getting the carb (HIF 44) tuned correctly...but getting closer.

I don't know why K. Calver promotes synthetic 20W over regular 20W in his article.  Most the arguments for synthetic oil are aimed at its use inside an engine, not a carburetor.  I have always used 3-in-1 in the blue/white bottle in my cars and have no complaints.

I'm sure someone makes straight 20W synthetic.  If you feel synthetic is important, I would start with the oil company websites (perhaps Royal Purple and Red Line among others ) to see who makes a straight 20W, then check their websites looking for local distributors.  Though expensive, once you identify a maker for the oil, you will probably find it is available through Amazon.  One quart will last you a lifetime so the one time expense is certainly justified. 

Just following the advice from the article here on MM about dashpot oil.

Why synthetic?  

The original SU oil would have been a straight, organic, 20W oil.  If you buy 3-In-1 oil in the blue/white bottle, that's a straight 20W.  The bottle is a convenient size to carry in the boot.

I was reading on here that I should try straight 20wt syn oil for my dashpot.  Anyone know where to find some?  I've googled with no luck.