Mixing oil types (5w-20 mixed with 10w-30)
My RV has the ford v-10 in it and I noticed today the oil is closer to the "low" level than the "full" level on the dip stick. I have a few quarts of 10w-30 (might be 5w-30) but I was going to top it ...
Forum Discussion
Engine lubricating oils can be mixed without problem. A 10W-30 is really little different from a 5W-20 with respect to lubrication at normal operating temperatures.
I'm not sure about "top it off" since the package size is usually a quart, and the difference between the "low" or "min" mark and the "full" or "max" mark on a dipstick is usually a quart. I carry oil, check levels daily when moving, but add oil only when it drops below the "low" mark (which has happened maybe twice in the past 20 years of driving). We've come a long way from the "add a quart every 600 miles" days.
I'm not sure about "top it off" since the package size is usually a quart, and the difference between the "low" or "min" mark and the "full" or "max" mark on a dipstick is usually a quart. I carry oil, check levels daily when moving, but add oil only when it drops below the "low" mark (which has happened maybe twice in the past 20 years of driving). We've come a long way from the "add a quart every 600 miles" days.
