Would appreciate any help l have a v70 2.5 petrol which I did a engine flush and put new oil 15/40 part sym in have done 50 miles on checking the oil it looks a beige coloured creamy feeling engine when driving it surges any advice l would be grateful thanks in advance

 

are you losing any coolant? Do you drive short distances where the engine never fully heats up? creamy oil suggests water in the oil - could be condensation (not enough driving to boil off?) or could be a head gasket allowing coolant into the oil.

Hesitation could be several things - plugs/coils/mixture issues. What year and how many miles?