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Author Topic: Gold Flakes Engine Oil?  (Read 612 times)
thunderstruck
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« Reply #15 on: November 27, 2018, 02:54:17 pm »

Odds of bearing issues with 2 motors at the same time seems awfully low to me.  Hopefully you will get some insight with the oil tests.  Good move to make sure you feel good about the engines.

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Captain Webb
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« Reply #16 on: November 28, 2018, 05:43:44 pm »

Odds of bearing issues with 2 motors at the same time seems awfully low to me.  Hopefully you will get some insight with the oil tests.  Good move to make sure you feel good about the engines.


If they are running so cold and possibly making oil could that have possibly cause the funky colored oil!?
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Captain Webb
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« Reply #17 on: December 05, 2018, 11:43:39 am »

Both T-Stats were stuck open. I replaced and all seems good now.

Motor temp - 145
Oil pressure at 590 RPM 25-30 PSI
Oil pressure at 4K RPM 69.8 and 71.1

I dropped the oil again and did not see the gold flakes after about 5 hours of use - sending out an oil sample. No knocking and they run great.
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thunderstruck
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« Reply #18 on: December 05, 2018, 12:24:22 pm »

I have a 2005 250.  The service manual for my motor has for SN1B517434 and above:

Oil pressure minimum at 550 rpm    = 5 psig
Oil pressure minimum at 6000 rpm  = 29 psig

Regardless of the year I believe there is no doubt you are well within spec.

Good excercise.

The hot idle oil pressure is always a quick check on the health of the oiling system and bearings that you can use going forward.

Please post the results of the oil test.

Sounds like you are good to go...
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