Best oil for 90k 1.8 DZ

[b2_sport]

My 80 Sport has done more than 85k and less than 90k cannot remember exact figure.. anyway its in the garage at the moment as I was getting more and more concerned about the camshaft oil seal, so I gave it to a mechanic i trust with all parts such as camshaft & crankshaft seals, sump gasket, rocket gover gasket set, timing belt kit, water pump, & full service kit.

The timing belt and water pump are being done as precautionery items, I do not know when they were changed although working fine and loosing no water I rather have a piece of mind and just change them! BTW I would always go for SKF timing belt kits as they come with new tensioner screws, dampers & new bolts, which the Continental ones never include!!

Whilst i am having all this work done I told the mechanic to flush the engine and cooling system as well, whats the best oil going to be for this engine at this kind of mileage, also what is the reconmended coolant on this?