First oil change?
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Junior User
Joined: Feb 2005
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From: Michigan
All oils break down over time with use. Sitting in the container they are fine. With use however eventually the modifiers they put in the oil to make it 15w-40 and any other friction modifiers break down and what you are left with is 15 weight oil. This is caused form the heat and shearing of use it's not a time thing it is a use thing.
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Joined: Dec 2007
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A different oil question for the do-it-yourselfers. Is it safe to say when doing both an oil and filter change to put in 15 new quarts or are you finding that some old oil stays in the tank and less than 15 quarts is needed? With my old 4.6 gasser which called for 6 quarts, I put 6 quarts in every time and never once measured the dipstick in over 100K miles and I changed every 3K miles.
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Junior User
Joined: Feb 2005
Posts: 92
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From: Michigan
I changed it this weekend 1300 miles I'm glad I did it was sooo black I know this is not unusual for a diesel but it had a strong fuel oder to it as well I also noticed a lot of very fine shavings on the drain plug magnet also not unusual for a new motor. But now I have peace of mind. I am still not sure why ford doesn't recommend changing the first oil at 1000 to 2000 miles because mine looked just like the oil that came out of my old 7.3 at 3000 miles.
More Turbo
Joined: Jan 2005
Posts: 574
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From: Carthage, Mo
My 7.3 gets changed at 3000 & the oil is still clear by then. I know this is probably overkill but I am a stickler on maintainence & this is cheap insurance for me. If your oil was that black with a fuel smell, that doesn't sound right.
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Joined: Dec 2006
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The 6.4L PSD will have blacker colored oil due to the EGR valve recirculating exhaust gases. The top ring on the piston is higher than the 6.0/7.3 PSD engine. The 6.4L top ring will pick up more combustion carbon from the scrubbing near the combustion chamber.
I haven't worried about the color. Use CJ-4 oil and change every 5000 miles /8000 Km for Severe Duty and 10,000 miles/16,000 km for Normal Duty. I use the Severe Duty cycle as I tow a 5th wheel.
I haven't worried about the color. Use CJ-4 oil and change every 5000 miles /8000 Km for Severe Duty and 10,000 miles/16,000 km for Normal Duty. I use the Severe Duty cycle as I tow a 5th wheel.
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99bajakid
1999 - 2003 7.3L Power Stroke Diesel
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Jun 29, 2005 03:12 PM
