1850 Oliver Gas Spark Plugs

eye4iron · Apr 24, 2017

What is the sparkplug number for an 1850 gas. Is there a hotter number plug that works good for an older engine?

Brown Swiss · Apr 25, 2017

I have always used AC 44XLS, not saying that is the one recommended to use.

eye4iron · Apr 25, 2017

Thank you. That may be what it has now and that's OK. I also want to know if there is a hotter plug that is used. On my Farmall H and M it calls for D-16 sparkplugs but I use D-21. They seem to last longer in an older engine that doesn't get rowcrop duty anymore.

farmerwithmutt · Apr 25, 2017

Ran into same problem with my dads m it was only on a loader and didn't get worked hard enough to burn the carbon off put a hotter plug in an ran fine. Now if any tractor fouls i just go to a hotter plug if it runs hot just get a cooler plug.

Bob M · Apr 27, 2017

My son has had good luck with AC R45XLS and Champion RN14YC in his old (and lightly loaded...) 1850. They are hotter than the factory spec'd Champion RN11YC.

1850 Oliver Gas Spark Plugs

eye4iron

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Brown Swiss

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eye4iron

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farmerwithmutt

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Bob M

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