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?
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.
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.
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Mike W
Venice, FL
RV-6A. Mattituck TMX O-360, FP, GRT Sport EFIS, L3 Lynx NGT-9000
N164WM
N184WM reserved (RV-8)....finishing kit in progress. Titan IOX-370
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.
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Gary A. Sobek
NC25 RV-6 Flying
3,400+ hours Where is N157GS Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.
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
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RV7A Flying since 2015
O-360-A1F6 (parallel valve) 180HP
Dual P-mags
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada
I need a favor - dipstick marking
Linear Mode
