Valve saver and efi 2010 yz450f ??


5 replies to this topic
  • freerider_australia

Posted December 29, 2009 - 05:18 PM

#1

just wondering if using a valve saver additive such as motorex valve guard is ok in fuel injection systems i was concerined if it could block injector holes
thanks

  • racerx_217

Posted December 29, 2009 - 07:08 PM

#2

I have always ran regular lead additive for a car, a cap full per tank. I have never had problems. Knock on wood.

  • grayracer513

Posted December 29, 2009 - 08:09 PM

#3

Your engine was designed to use unleaded fuel. Additives containing lead have little chance of actually extending the life of your valves, and truth be told, some chance of shortening it. My advice would be not to use them.

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  • moto278

Posted December 29, 2009 - 09:35 PM

#4

idk bout fuel additives but i run u4.2 which is a leaded gas. everythings been good so far.

  • freerider_australia

Posted December 29, 2009 - 09:47 PM

#5

as far as i can tell motorex does not contain lead it contains parrifin which i think i is a type of wax you mix i 1:1000

  • grayracer513

Posted December 30, 2009 - 08:51 AM

#6

as far as i can tell motorex does not contain lead it contains parrifin which i think i is a type of wax you mix i 1:1000

Engine oil contains paraffin. Sounds like nothing more than "top oil". Top engine lubes are useful when using "dry" fuels like alcohol or some racing gasolines, but they are of more benefit to the rings than the valves. They won't hurt, though.





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