Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
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Old May 31, 2014 | 09:46 AM
  #31  
bigbadon's Avatar
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Year: 2004
Model: Grand Cherokee
Engine: 2000 4.0
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Originally Posted by Firestorm500
They cooked up that 3,000 mile oil change interval way back in the 1930's as a way to sell more oil.
Closed crankcase with positive crankcase VENTILATION was the most significant step to increase OCI. Computer control fuel delivery and combustion took it to the next level. Condensation and fuel dilution on new vehicles are a thing of the past.
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Old May 31, 2014 | 09:51 AM
  #32  
cruiser54's Avatar
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Year: 1990
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Originally Posted by bigbadon
Closed crankcase with positive crankcase VENTILATION was the most significant step to increase OCI. Computer control fuel delivery and combustion took it to the next level. Condensation and fuel dilution on new vehicles are a thing of the past.
Absolutely. No sticky automatic chokes to wash oil off the cylinder walls and fuel into the crankcase..
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