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Post by oswald on Feb 3, 2010 3:04:42 GMT 9
While I was in training for my 5 level, the instructor was very specific about the type of engine oil used in jet engines. He advised us not to try using it for our own cars. My question is was it truly detrimental to our own motors or was it his way of prevent a shortage?
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Bullhunter
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Post by Bullhunter on Feb 3, 2010 4:11:06 GMT 9
Its my understanding that 7808 jet engine oil has a slight acid additive to it to help desolve small bits of metal shavings.
I don't want to be quoted on that statement, as that is just what I've been told several times.
I have never looked into it myself. As a jet engine technician I should know that! :scratch_head
I was also told the jet engine oil can damage car motor seals.
But again that is only hear-say.
Sorry I did not answer your question with facts. But keep checking in here as we have some very sharp cookies in this form.
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Jim Scanlon (deceased)
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Post by Jim Scanlon (deceased) on Feb 3, 2010 4:16:27 GMT 9
I don't know if the synthetic oil used in jet engines would harm a car engine. But, it sure was hard on fatigues. It must have a high acid content, as it would eat holes in the cloth. More than one pair of brogans was ruined when the oil ate away the thread holding the leather together.
At one time we were issued special shoes for working on aircraft. They had fuselage friendly soles that were part cork and they were supposed to be resistant to engine oil, hydraulic fluid and JP4. I may still have my pair in an old foot locker. I may have worn them once or twice.
It would also do a number on paint if you didn't wipe it up quickly.
Don't know if the oil used to-day is the same as it was on the J47.
I don't think all of the old jet oil was synthetic, but it was like water.
Jim Too
:god_bless_usa
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Post by Jim on Feb 3, 2010 8:42:08 GMT 9
Believe the oil used in the J-33, J-35, J-47, J-48 and J57 was Mil-L-1010, and it had a tendancy to cause main seals, pan gaskets, and valve cover gaskets to leak sort of profusly....... However, mixed with gasoline it did a better job than the old Bardol engine flush to clear up sticky valves--- sure did smoke tho.................................. The Old Sarge
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Bullhunter
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Post by Bullhunter on Feb 3, 2010 10:17:10 GMT 9
Early in my assignment at Sembach Air Base, W. Germany (1979) I was in phase dock servicing the engines on an OV-10A Bronco. The oil filler had a pop latch that turned then you rotated it and this tub pulled part way out of the oil tank. This let you add oil without the use of a funnel. I pull the filler/cap assembly out and it came all the way with a sucking sound and then engine oil hit me in the face and eyes. I was on a maintenance stand and and worried about falling. My eyes burned and I couldn't see. Some alert mechanics were close by and observed me in distress. They grabbed me off the maintenance stand and they pinned me to the floor and helded my head. Another troop took a hose with a slight gentle stream of water and flushed my eyes. Then they rushed me to the base hospital. Several weeks later all the hangers had new eye flush stations. Someone had broken the two stop tabs off the filler neck which allowed the thing to come out of the tank... and they did not even write it up. I owe my eye sight to some quick thinking maintenance troops. Jet engine oil has some strong stuff in it and when hits your eyes burns real bad. Please don't try it - just take my word for it!  |
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Post by jimpadgett on Feb 3, 2010 12:05:14 GMT 9
Jet engine oil will eat the seals out of an automobile engine. Profusely is not the word for it. More like catastrophically. AHH... Bardol. Remember the commercial where the guy says, "Bardol, good for your motor." Came out "modor". 115/145 avgas would clean out your engine at least the valves (ahem, so I am told). There was dye in the 115/145 though. Showed up nicely under black light. Handy for finding leaks and thieves.
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Post by oswald on Feb 4, 2010 20:38:50 GMT 9
Thanks fellas that info reconfirms what I was always taught to believe. Now I have some ideas on what my niebor and I can discuss. He also was flightline trained, but is a bit younger than me.
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Post by Jim on Feb 4, 2010 23:50:36 GMT 9
115/145- was dyed with a blue tint, used it in my road racing motorcycles while stationed at Yokota 67-69............ Had about a 4-5 HP increase at around 1500 rpm.. Got undrer the guise of checking the sumps for condensate, so it wasn't stolen.................. The Old Sarge
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Post by oswald on Feb 5, 2010 4:15:58 GMT 9
Jim, I'm not familiar with those numbers. I was however refering to Mil-l-7808. Eventhough those were some of the things that my friend was telling me. The facts were that the synthetics used now like Mobil One and the castrol synthetic oils were the same according to him. I still think he never tried the jet oil in any of his cars.
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Post by pat perry on Feb 5, 2010 8:02:08 GMT 9
Jim, I'm not familiar with those numbers. I was however refering to Mil-l-7808. Eventhough those were some of the things that my friend was telling me. The facts were that the synthetics used now like Mobil One and the castrol synthetic oils were the same according to him. I still think he never tried the jet oil in any of his cars. Everything you ever wanted to know about Mil-l-7808 Material Safety Data SheetHappy Motoring Pat P.  |
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