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Application of MIL-PRF-8188 preservation oil to assembly for aerospace application

Application of MIL-PRF-8188 preservation oil to assembly for aerospace application

Application of MIL-PRF-8188 preservation oil to assembly for aerospace application

A customer requires that we apply MIL-PRF-8188 preservation oil on assembly that is used in the fuel system on an aircraft. Are there any standards that define the proper application process?

RE: Application of MIL-PRF-8188 preservation oil to assembly for aerospace application

I work with USAF and USN... and have NEVER heard of this specification before... I had to look it up.

MIL-PRF-8188 appears to be a turbine engine preservation oil... not fuel system preservation Oil. Typically fuel system rubber seals and gaskets are assembled 'wet' with turbine engine oil... not preservative oil.

For giggles, I checked USAF T.O.s, MIL-HDBKs/-STDs and a couple of FAA resources for engine preservation: this oil was NOT in any current documentation... but other preservation oils WERE in these documents.

IF Your customer insists on using this -8188 oil for whatever purpose, then THEY need to provide the documentation or references.

Regards, Wil Taylor
o Trust - But Verify!
o For those who believe, no proof is required; for those who cannot believe, no proof is possible. [variation, Stuart Chase]
o Unfortunately, in science what You 'believe' is irrelevant. ["Orion", HBA forum]
o Only fools and charlatans know everything and understand everything." -Anton Chekhov

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