what oil should i use in my cossy its a saff g reg stander d

 

15-50 fully synthetic

 

You will get the best protection from a fully synthetic.

I would recommend either a 10w-50 or 15w-50.

You'll get better cold start protection from a 10w-50 and the same high temp protection i.e. sae 50.

Cheers
Guy

 

mobil 1 motorsport 15-50

 

Mobil 1 motorsport 15W-50 or Castrol RS 10W-60

 

Out of these two, Mobil 1 15w-50 any day, very good quality PAO synthetic, against the hydrocracked mineral oil of Castrol.

Cheers

Guy.