i have some titan pro r 15/50 lying around from a previous brief-would this be ok for the yb-or a bit thick when cold? its only st3-greens etc

 

Too thick when cold. Is it your daily car? Would stay with a good Fuchs Titan Super Syn 5W-50 or Mobil 1 5W-50 with short change intervalls. More than enough. Road cars (even when driven hard) don't need pure "racing" oils tbh, sometimes they will do more harm than good.

 

its not a daily-just a weekend/hobby car
i used pro s in my previous car but was given the pro r from a friend..
it will have to go somewhere eventually-just as long as it does no harm
my car wont be used in winter either...

 

Oil is simple first number how it flows when cold. 15w is good too -10 10w is good to -20 5w is good -30. Second number is how thick it is when warm.
A 10w50 is just right not to thin when warm and still good for as cold as your ever be using your yb in the uk lol