Hi Pat, (Chris (Rangieman) will have another fit), but I have been tending to pull heads on these on average between 240 and 260k. The gasket condition at these mileages shows it is a good thing to do. We pulled Ians' (leo109) head off his 300Tdi with 360k, and it had gasses blowing under 2 of the fire rings quite badly although there were no noticeable external symptoms. Glad we did it as he tows a decent size van and poor old disco gets a caning sometimes
Valve set I do every 10k, which is every engine service for us, and some need adjusting some don't. If you leave it to 20k, then the last 4 or 5 k there will possibly be a noticeable drop in performance.
JC



				
				
				
					
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), but  I have been tending to pull heads on these on average between 240 and 260k. The gasket condition at these mileages shows it is a good thing to do. We pulled Ians' (leo109) head off his 300Tdi with 360k, and it had gasses blowing under 2 of the fire rings quite badly although there were no noticeable external symptoms. Glad we did it as he tows a decent size van and poor old disco gets a caning sometimes
 
				
				
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