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Re: small vibration becoming ominous knock[700/1987] posted by Dan on
Monday, 14 September 1998, at 10:18 p.m.
Upon consideration of your input, I am now more inclined to think that the source is the driveline or engine mounts. I will start my search there.
But I am curious about "analysis of an oil sample". What do you suggest? Perhaps filtering through a coffee filter.
Once again, thank you!
Re: small vibration becoming ominous knock[700/1987] posted by Steve Seekins on
Tuesday, 15 September 1998, at 7:43 a.m.
To analyze oil sample, collect a small amount in a sample jar (you can get pre-paid 'mailers' similar to pre-apid film mailers - they have a form to fill out, a sample jar, and a shippping box) fill out the form and mail the sample to the lab. They will do a spectral analysis of the sample and provide you a detailed report of the condition of the oil and its additive package (viscosity, lubricity, oxidation, condition of rust preventative package, etc.) and any contaminants - metallic (bearing material, piston material, ferrous metal, etc.) combustion products (from blowby), coolant (gasket or oil cooler leaks), moisture (condensation), etc. The report also provides information on normal expected amounts and suggests possible sources of any problems.
--Steve Seekins