oosik
Epic Contributor
I used calcium on my previous tractor for 26 years and disliked every minuet of it.  I replaced more valve cores with calcium than I could count - at least two cores per rear tire per year.  On the new tractor I use Rimguard and no tube.  What a nice relief.  Rimguard is not that expensive at my location.  And it has zero effect on tires or valve cores.
	
		
			
		
		
	
				
			