Mobil 1 in the 3.0
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Yes, Ford changed it in a lot of their cars a couple years back (including my dad's 01 Cobra) to increase their fuel economy rating. They say to put 5W-20 in a lot of their newer engines to balance out the terrible gas mileage their bigger truck engines get.
But to answer your question, I used Motorcraft 5W-20 up until 20,000 miles. After 20K I switched to Mobil 1 5W-30. I've gotten better gas mileage (not much but hey it's some) and noticed a little better of an idle when sitting at stop lights. It's definately worth the extra money.
But to answer your question, I used Motorcraft 5W-20 up until 20,000 miles. After 20K I switched to Mobil 1 5W-30. I've gotten better gas mileage (not much but hey it's some) and noticed a little better of an idle when sitting at stop lights. It's definately worth the extra money.
#9
Unregistered User
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5w20 was not used for better gas mileage, it was used due to new tighter bearing specs.
it dosent matter what oil you used just make sure you use a good filter with a drainback valve.
i personaly like the "oil at start-up" that the 0w20 mobil 1 gives, and now that its getting colder out i'm sure my engine likes it also!
it dosent matter what oil you used just make sure you use a good filter with a drainback valve.
i personaly like the "oil at start-up" that the 0w20 mobil 1 gives, and now that its getting colder out i'm sure my engine likes it also!
#10
http://www.amsoil.com/articlespr/pr_new5w20_oil.htm
And I quote: "Ford believes the switch to lighter viscosity oils will reduce carbon dioxide emissions by 190,000 metric tons a year and reduce U.S. fuel consumption by over 21 million gallons a year."
And I quote: "Ford believes the switch to lighter viscosity oils will reduce carbon dioxide emissions by 190,000 metric tons a year and reduce U.S. fuel consumption by over 21 million gallons a year."
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Your instincts are right -- but not on target. The oil gets dirty as soon as you start your vehicle.
I have my oil tested when I drain it and it's within spec to continue being used, especially in terms of particulates/silicon and what not. A good filter keeps the larger more damaging particles down just fine.
The characteristic that kills engine oil is typically NOT dirt -- it's the breakdown of the base stock and depletion of the additives. This has almost nothing to do with dirt. Modern engines run so clean that if you use a good filter (both air and oil) dirt is not the major issue in oil longevity. Most of the damaging dirt that kills an engine comes in by your air intake, not from combustion.
I have my oil tested when I drain it and it's within spec to continue being used, especially in terms of particulates/silicon and what not. A good filter keeps the larger more damaging particles down just fine.
The characteristic that kills engine oil is typically NOT dirt -- it's the breakdown of the base stock and depletion of the additives. This has almost nothing to do with dirt. Modern engines run so clean that if you use a good filter (both air and oil) dirt is not the major issue in oil longevity. Most of the damaging dirt that kills an engine comes in by your air intake, not from combustion.
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