Need some help guys.
My 2001 Mk4 1.4 16v has recently developed what i think is a sticky tappit.
Problem is,it dosnt do it all the time.When its cold its fine,but when its up to temp it starts to chap after a couple of miles driving.Its not drastic and dosnt do it all the time,but is quite annoying when it does.
The engine has done 127k.
Im thinking(hoping)that an oil and filter change will cure this.Seems like the oil has lost its viscosity.

What oil would you recommend with my mileage??Something a bit thicker maybe?