Synthetic Mobil 1 high mileage - 2003 4.3 litre 160k miles

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Dec 16, 2019
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Synthetic Mobil 1 high mileage - 2003 4.3 litre 160k miles I have used Mobil 1 high mileage 5W30 for years. With the Mobil one high mileage filter. Change oil & filter every 6k miles. I changed the valve cover gaskets yesterday and took pics of the rockers and related .. I was very surprised to see how clean everything was. See attached pics.. Wanted to share my findings.

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GON

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Originally Posted by ad244
Clean enough! - Love that PITA #3 spark plug
Going through the wheel well the #3 plug is not bad at all!!! My Son never changed his oil, i always did (I lived 2,000 miles away). Always used M1, went through three transmissions on his S10, but at 225k miles, the 4.3 is still going strong, just ran M1 and changed it once a year if lucky.
 
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Jan 3, 2009
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Illinois
Originally Posted by GON
Originally Posted by ad244
Clean enough! - Love that PITA #3 spark plug
Going through the wheel well the #3 plug is not bad at all!!! My Son never changed his oil, i always did (I lived 2,000 miles away). Always used M1, went through three transmissions on his S10, but at 225k miles, the 4.3 is still going strong, just ran M1 and changed it once a year if lucky.
On my old 91 Ranger 3.0 I had to remove the tire on the passenger side and go up through the wheel well to remove the last plug on that side.
 
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Virginia
Originally Posted by danez_yoda
This is how an oil is supposed to leave an engine.
Exactly right ^^^^^
 
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WA
That valve train looks just as good as the one advertised on M1's website for their HiMi formula. Nicely done.. don't change a thing....
 
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