I need a favor - dipstick marking

[Jab]

Hi all

I recently bought an RV 4 fitted with an O320 A3B and while the builder marked the oil dipstick, it has old markings too and I want to make sure I am using the correct ones. I will calibrate the dipstick myself at the first oil change but until then, if you have a similar O320, could you please measure your dipstick and let me know how many inches to 4, 6 and 8 quarts?

Thank you,

Gary

[DennisRhodes]

Sounds like that previous owner may have shortened the dipstick extension pipe and remarked the stick. Your best solution may be just change the oil and remark.

[fl-mike]

If the oil is new, just drain it and re-fill a quart at a time.
Don't forget there is some oil in the filter if you have one. Otherwise you'll be marking your stick about a half quart high.

[RV6_flyer]

Originally Posted by fl-mike

If the oil is new, just drain it and re-fill a quart at a time.
Don't forget there is some oil in the filter if you have one. Otherwise you'll be marking your stick about a half quart high.

20+ years ago when I put oil in my engine for the first time, I checked with each quart added. 2-quarts added was 2-quarts on the stick. 4-quarts added was 4-quart mark on the stick. The engine had not been run so there was no oil in the filter, crankshaft, or constant speed prop.

[Jab]

Thank you for the responses gentlemen, I will have to drain the oil to calibrate it.

[Bevan]

I wonder if the dip stick marking differences has to do with tri-gear vs taildragger configurations causing oil level to be deeper in the rear pan area when on a tail dragger?

Bevan