I worked in a multinational for years but gone over 5 yrs now, since then I have not added to that pension which has grown nicely, I am joining another multinational soon , can I transfer my old pension funds to my new pension fund with the new job,
Probably but that will depend on the rules of each scheme.
However, you would also want to look into the advantages/disadvantages of doing so. The funds might be better off where thay are. Depending on your situation, a proper review by a pension consultant may be warranted.