It makes them heavier so you can catapult them further when fishing the pellet waggler and it also crates an attractive oil slick on the surface.
Most people use a fishy flavour type oil but I guess sunflower oil would have the same effect.

ive just started to use it helps get distance and helps them to sink plus im putting a flavoured syrup on them for smell

So a fishery sells its own pellets on the basis that the owner knows what is going into his lake. As far as I know no fishery will sell you high oil pellets like halibuts. Many too ban meat on the grounds of water quality related to fat content. Now anglers are adding oil???
I fear yet more bans and ever longer lists of rules, what are we playing at?

I was thinking along those lines as well John.
If it was my lake, I would not allow liquid oil additives.
Dependant on the size of a water, it would not take long for a small water to have a film across it if a lot of oil soaked pellet was thrown at it.
What sort of oils are people using?

Hemp oil?? :confused:

What about all the dips, glugs, goo, pellet particle soaks and stick mixes?

Think I could cope with the odd hook pellet soaked but the thought of liberal doses of oil on pellets being fed and the slicks they give off??
Not sure I like that.

I put 2 table spoons of sunflower oil on 2 pints of pellets and give them a good shake being as pellet quality is so bad these days and a lot wont sink need something to help them