Need Big block advice!

I finally caved and went to get my hearing tested.
The doc said: Let me guess. Your wife complains you can't hear her.

True!
 
My father-in-law went to the doctor. The doctor said, "you should get a hearing test." My father-in-law replied, "a urine test? What's that got to do with my hearing?"

True story.
 
They have a life expectancy, big truck engines use them and when certain points swell up your supposed to replace them. Much like the vavletrain on a /6 nobody ever touches them and they are fine. There is another group that say they should be replaced every 500,000 mi on a truck rezoning is silicon breaks down after so much heat and cooling.
 
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