Oil Change
- Thread starter GT Venum
- Start date
You might want to ask the question here. There is a link on the page to ask a question.
https://www.mobil.com/en/lubricants...experts/shelf-life-of-unopened-mobil-1-quarts
https://www.mobil.com/en/lubricants...experts/shelf-life-of-unopened-mobil-1-quarts
twobjshelbys
GT Owner
fjpikul
GT Owner
I would not. Put 5000 miles on it. If you are using the Ford recommended oil you should be good. Pete K has some info on oil analysis he has performed over the years. I believe Rich of the GT Guys also concurs.
PeteK
GT Owner
First, ya can't go wrong sticking to the recommended 5Kmi oil changes.
Second, I have been doing oil analysis on my car since 30,000 miles (now at 92,000). Based on those results, and using the recommended Motorcraft 5W-50 oil, I have increased my change intervals to 10,000 miles.
That may sound like heresy to a few of you, but remember that the 05-06 GT holds about 9.5 quarts of oil, which is 50-90% more than a wet sump engine design, so the oil gets less wear and tear. I continue to do oil analysis at each oil change and if you decide to follow my lead, I recommend that you do regular oil analysis too. If wear metals increase, then reduce your change interval.
As for changing oil based on time, I now totally ignore the "1-year" recommendation on all my cars. I do that for two reasons:
1. I drive my cars often enough that I put 5000 miles or more on my cars in less than 2 years.
2. Blackstone Labs and other labs have tested old oil and found that it continues to meet specifications for many years. The primary factor requiring the oil to be changed is use, not time, due to contamination by fuel and blow-by (and in diesel engines, soot buildup).
One caveat: Do not run your engine for short periods at a time to "keep things moving." If you run it, go drive it long enough to get it thoroughly warmed up. This evaporates water and other light contaminants, and gets the oil up to the temperature where the additives can do their job to clean and neutralize. Otherwise, let it sit or prepare it for storage.
Second, I have been doing oil analysis on my car since 30,000 miles (now at 92,000). Based on those results, and using the recommended Motorcraft 5W-50 oil, I have increased my change intervals to 10,000 miles.
That may sound like heresy to a few of you, but remember that the 05-06 GT holds about 9.5 quarts of oil, which is 50-90% more than a wet sump engine design, so the oil gets less wear and tear. I continue to do oil analysis at each oil change and if you decide to follow my lead, I recommend that you do regular oil analysis too. If wear metals increase, then reduce your change interval.
As for changing oil based on time, I now totally ignore the "1-year" recommendation on all my cars. I do that for two reasons:
1. I drive my cars often enough that I put 5000 miles or more on my cars in less than 2 years.
2. Blackstone Labs and other labs have tested old oil and found that it continues to meet specifications for many years. The primary factor requiring the oil to be changed is use, not time, due to contamination by fuel and blow-by (and in diesel engines, soot buildup).
One caveat: Do not run your engine for short periods at a time to "keep things moving." If you run it, go drive it long enough to get it thoroughly warmed up. This evaporates water and other light contaminants, and gets the oil up to the temperature where the additives can do their job to clean and neutralize. Otherwise, let it sit or prepare it for storage.
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