Starting out on a cold morning I get this howling noise (only way I can describe it).it starts out low and goes higher and then goes back down slowly, it may do this a couple to several times until it finally stops. I am guessing until it gets warm. this morning it it kept going for a while. It doesn't seem to interfere with performance . Not knowing what it might be it concerns me.
Jan 10, 2021 at 4:32 PM
