I am new to collecting (about a month) and I have seen a
thread started similar to this one but never saw a definitive response. The "mass produced" kit of old coins that I first bought recommended mineral (baby) oil over olive oil, it seems primarily because the author perceived that the olive oil causes the coins to darken. I saw responses on here saying that olive oil was
fine to use on coins and there was no darkening, but I never saw any response on the relative merits of mineral oil.
Has anybody actually used mineral oil and compared the results to olive or other oils? I used mineral oil to start mine
per the directions on my kit, but I am thinking about starting a comparison group in olive oil.