Second (third) Rick's suggestion. I use LPD, 1:2 from stock, 2 minutes with Ilford MG (although glossy) and get neutral results, with Ilford MGWT (warm tone) slightly browner. Both deepen with selenium toner, but the change is less obvious with MGIV.
Thank you everyone for helping me out. As I wrote I am still learning and I basically started printing only 6 weeks ago, so I am very grateful for all your inside and advice. Thank you all!
Honestly, I find that Multigrade has this tendency even with a different developer. I have standardized on Freestyle's Eco-Pro liquid developer and MG looks pretty good in it, but I always selenium tone it. It looks good without the toning, but the blacks really deepen with toning.
> But, adding about 5-10 ml of a 10% Potassium bromide
Or simply add 10% of wasted developer to the new one.