After driving Ford Ranger, high mileage, 10 miles and at normal operating temp, I park overnight on level concrete floor. I check oil level?
Next day before starting and when I pull dipstick out, oil level is at full mark. I wipe the dipstick clean and re-insert and check oil level again, the oil level is down about 1/8th inch or so. I check it once more and get same reading. Is the crankcase full or do I need to add some oil?
Added (1). Just to be clear, since this is an older Ranger with over 170,000 miles, I use high mileage oil and I check the oil level regularly. It doesn't use oil after just 10 miles of driving.
Their is a low and a high or normal mark on the dipstick… Look at it a little closer. Theirs no need to add any oil unless its at least a quart low. And thats usually the difference between the two marks.
1/8 th of an inch below max is fine. You can top it up if you wish but I expect 1/2 pint will raise it to max.
As long as the level is between the add and full mark, you're good to go. If your oil level is BELOW the add mark, then add ONE quart (liter) at a time until it's back up to normal.
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