A friend of mine is an experienced Harley rider / builder and also a very skilled mechanic (which is useful when riding certain brands). We discussed my ongoing project of mounting an oil pressure gauge on the Vmax.
On his latest build he mounted a gauge which is common on HDs. He noted that the drop in PSI was significant when runinng on idle and hot oil and using mineral 20W50. The Motul 5100 10w40 ester based oil which seems to be a semi synthetic had much lower drop.
Does anyone have an explanation of the phenomena or a similar experience?
On his latest build he mounted a gauge which is common on HDs. He noted that the drop in PSI was significant when runinng on idle and hot oil and using mineral 20W50. The Motul 5100 10w40 ester based oil which seems to be a semi synthetic had much lower drop.
Does anyone have an explanation of the phenomena or a similar experience?
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