oil foaming?

ref+10

Recruit
Joined
Jun 23, 2008
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3
2000 F100 new to me, w/ about 700 hrs... I tried to save a buck this spring and put on Fram filter and Castrol oil (matching API specs)

Intermittent buzzer after engine start... researched this forum and found similar complaint w/ FRAM oil filter to blame... changed filter to Yamaha, problem fixed.

I have about 15 hours on this oil this season,,, mostly trolling. Was out this weekend and ran hard for about 2+ hours total... about 30 min per run.

I now have a white gease-like-oily film up in the oil dipstick tube, and the base of the dipstick handle. Oil on the stick @ the proper (prerun) level, and appears to be in good condition (not mixed w/ water)

This grease like substance coated the intereor of the dipstick tube about a mm thickness, most of the (visible) way up, and base of the handle (top of the stick)

Is this a result of foaming oil??

Anyone else have similar results w/ CASTROL?

I'm thinking oil and filter change w/ yamalube, any suggestions to flush out this "grease"?:confused:
 
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