On my ( 1995 ) Ford Explorer with the 4.0 OHV / pushrod design V6 engine
the EGR valve is located low down just to the left of the engine oil dipstick
( when you look into the engine compartment from the drivers side , it has a round shaped top on it )
The 4.0 liter Over Head Valve / pushrod V6 engine ( the 8th " character " of the VIN is an " X "
In a Ford Explorer : The 4.0 litre V6 engine ( both the EFI , which is the Over Head Valve / pushrod design engine , and the Single Over Head Cam version take 5.0 U.S. quarts of 5W-30 )
Depending on the model of 2000 Ford Explorer : The 4.0 liter SOHC ( single over head cam ) V6 ( the 8th " character " of the VIN is an " E " ) The 4.0 liter OHV ( over head valve / pushrod design ) V6 , VIN " X " or The 5.0 liter V8 which is also an over head valve / pushrod design ( VIN " P " )
In a 2000 Ford Explorer : Both the 4.0 liter EFI , V6 engine ( which is an Over Head Valve / pushrod design engine ) and the 4.0 liter , Single Over Head Cam , V6 engine take : ( 5.0 U.S. quarts / 4.7 liters of 5W-30 engine oil )
Either the 3.0 liter " Vulcan " V6 or the 3.8 liter V6 . Both engines are overhead valve / pushrod design
From 1991 to 1995 the only engine available in the Ford Explorer was the 4.0 liter OHV ( over head valve ) V6 - six cylinder engine
A 3.8 liter V6 , which is an over head valve / pushrod design The GT has the 4.6 liter single over head cam ( SOHC )
I was looking at the 2006 Ford Taurus owners manual and it shows : The 3.0 liter " Vulcan " V6 engine ( and its flex fuel version ) That engine is an Over Head Valve / pushrod design engine
On a 1997 Ford Taurus : The 3.0 " Vulcan " V6 engine is an Over Head Valve / pushrod design engine The 3.0 " Duratec " V6 engine is a Dual Over Head Cam design engine
Depending on the vehicle there are many wear points involved. There is wear at the valve seats, valve guides, valve stem, rocker arm to valve, rocker arm to pushrod, pushrod to lifter, lifter to camshaft and cam shaft. Some of these are eliminated if you have a overhead camshaft type engine. As the mileage piles up you may wear a few thousands on an inch at each wear point resulting in hearing ticking noises and loss of performance. With regular oil changes and proper adjustments you shouldn't have to keep adjusting them. Follow the manufacturer's recomendations.
Either the 4.0 liter EFI V6 ( which is an over head valve / pushrod design ) the 8th " character " of the VIN is an " X " or the 4.0 liter SOHC - V6 ( which is a single over head cam ) the 8th " character " of the VIN is an " E "
That really depends on WHAT MODEL YEAR of Ford Explorer My 1995 Ford Explorer XLT came with a 50 / 50 mix of distilled water and GREEN color antifreeze meeting Ford specification ESE-M97B44-A in its 4.0 litre Over Head Valve , V6 engine cooling system from the factory