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Farmall & IHC Tractors Discussion Forum
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Whats the difference?

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Lane

06-02-2005 16:27:42




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I would like to know what the difference is in spark plugs. I read one thing that says use the 15Y, another that says use the 18Y and then yet another will say 21Y. What is the difference and which is best? Thank you for the input.




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randy hall

06-02-2005 20:17:40




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 Re: Whats the difference? in reply to Lane, 06-02-2005 16:27:42  
use autolite 3116, not champions.



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George Willer

06-03-2005 06:26:11




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 Re: Whats the difference? in reply to randy hall, 06-02-2005 20:17:40  
All plugs are made of the same stuff to very similar designs! Use the proper heat range for the application and it won't make any difference who made them.



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RAW in IA

06-02-2005 17:03:13




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 Re: Whats the difference? in reply to Lane, 06-02-2005 16:27:42  
The different numbers denote different heat ranges opf plugs. the 15Y is the coldest, and should probably be used only fi the tractor is being used for hard pulling for an extended period. The hotter ones (21Y) are best for lighter use, or limited hard pulling. The tips stay hotter and keep the oil deposits burned off better, will not foul as quick under extended light use.



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