Maybe Griff or Spoonz can provide some advice ?
It seems that although Aprilia recomend 15/50 it is more advisable to run 10/40 in the UK, with no particular brand being recomended above all others ?.
I wouldnt say its more advisable to run 10w40 just that its easier to get hold of 10w40 than it is 15w50 :eatcorn
If you check the temp range of the oils it is very similar, i always use 15w50
The number before the "W" means winter, 10W is about −25 °C
and 15W is about at −20 °C if i recall, 15w50 having a higher temp range at operating tempertaure of the engine than the 10w40
As i said, change ya oil when you should and there will be no problem as long as you use the recomended MOTORCYCLE oil that Meet or exceed SAE grade recommendations.
:biggrin
Silkolene Comp 4 15w-50
Ester synthetics combat wear and friction on all critical load surfaces at high temperatures and during cold starts
Meet or exceed API SG, SH & SJ
Certified JASO MA.
Silkolene Comp 4 15W-50 Synthetic Ester Based 4-Stroke Engine Oil is an ester synthetic based lubricant which meets the needs of modern high performance engines, both with and without intergral gearboxes. COMP 4 15W-50 is a heavier grade engine oil designed to give excellent protection in
higher ambient temperature conditions.
And yes i need to get out more :biggrin
