If your Vaquero is like what we get here in the States the Vaquero comes with projected Irridium tipped plgs from the factory and have a lifespan of over 40,000 miles. No need to change them any sooner.
Due to the projected tip along with the other advantages in the design of the center and ground electrodes you will not find a better plug.
"TRUE HAPPINESS IS IN THE HEART,NOT IN THE OUTSIDE FIXES!!"
WITH OVER 42 YEARS AS A MOTORCYCLE TECHNICIAN/HI-PO SHOP OWNER I AM A PURVEYOR OF FACT NOT FICTION!
"WE LIVE OUR LIVES IN CHAINS NEVER KNOWING WE HAD THE KEY"