UPS & Mobil Jet Oil II

[JHZR2]

Originally Posted By: tom slick





If you guys are into BIG jet engines look up the GE90 used on the 777, its nacelle is larger than most aircrafts' fuselages! They can output up to 120,000 lbs of thrust. a C-5's engine (GE TF-39) puts out about 40,000 lbs thrust. The 747's GE engine is a derivative of the TF-39 called the CF6 and puts out 40,000-72,000 lbs of thrust depending on the model. The CF6 is used on many airliners besides the 747.


I saw one at the learning center at GE in Cincinnati. They have all sorts of neat engines there. The LM2500 and Allison 501k34 are the main ones I interface with, but they are not airplane engines... though the 2500 is an aircraft variant, I guess.

 

[tom slick]

Originally Posted By: Tom NJ
Wow! What is the date and Qual number on the can? I wonder if it is one I formulated.

Tom NJ


Where would those numbers be located? The lid is long gone. I know the can is pre 2004 because that's when I stopped being an jet engine fixer.

 

[Tom NJ]

The date would be on the lid, but the Qual number should be on the side. If the can was from 1996-2004 it would be MIL-PRF 23699F, type C/I, Qual number 0-5E, Hatcol 3212. That one is my formulation. Excellent product!

Tom NJ

 

[tom slick]

My can collection:

Is it one of yours?

 

[Tom NJ]

Originally Posted By: tom slick
Is it one of yours?

Yup, the Hatco can on the left contained my formulation. You should put only your finest pens in that one!

Tom NJ

 

[Johnny]

Hey, those are neat. Where can I find one of those?

 

[Tom NJ]

Hi Johnny,

You can buy filled commercial cans at many small airports - call ahead. Military cans are harder, unless you have a friend at a base willing to garbage pick some empties for you.

Tom NJ

 

[Johnny]

It's the military one I would like to have. I have all the Mobil, BP, and Shell cans. I will have to try and find someone that has military connections.

 

[tig1]

TomNJ
In the mid 60s I served in the Navy as a jet mech on P2V7 Neptunes. The oil we used in the J34s was a synthetic and smelled like fish oil and we even refered to it as such. Any idea who might have made that product? It came in qt. cans and even in the cold climate of Brunswick, Me. it poured out easily if the oil was left outside.

 

[Tom NJ]

Hi Tig,

The "fishy" smell likely came from a tertiary amine additive, probably an anti-oxidant or anti-corrosion additive. I don't know who was winning military contracts in the mid 1960s as I did not join Hatco until 1969, but I guess that whoever supplied you was using a good dose of one of these amine additives. Hatco did not use any smelly amine additives in the formulations it supplied at that time.

Tom NJ

 

[stranger706]

Originally Posted By: Tom NJ
Originally Posted By: stranger706
The Coast Guard uses Mobil Jet 254 as primary and Mobil Jet II as backup.


Hi Stranger - just curious, why doesn't the Coast Guard source MIL-PRF-23699 oil from the military's distributor like most of our armed forces, instead of a commercial aviation oil from Mobil? Historically the commercial oils were much more expensive, but that may have changed since I retired. Are your engines especially prone to coking problems?

Tom NJ


Tom,

Im just a lower level airframe/jet engine technician and those decisions are made way over my head.

I can tell you that the CG is unique in that we use military-converted versions of 2 civilian designed aircraft. They both happen to be French. One is the Eurocopter 365 (called the MH-65 Dolphin in the CG) and the second is the Dassault Falcon 20 (called the HU-25 Guardian in the CG). Maybe the oil requirements of these aircraft have something to do with the Coast Guard using Mobil oil.

Right now Im assigned to the Falcons which have the Garrett-Honeywell ATF3 turbofans. Im pretty sure this engine has some special oil requirements.

 

[kd5byb]

I have a Hatco C/I can pencil holder as well.

On bottom is 01/11/07 and 11. It got fed to a T700-GE-701C engine.

later,
b

 

[kd5byb]

Originally Posted By: Tom NJ
Hi Stranger - just curious, why doesn't the Coast Guard source MIL-PRF-23699 oil from the military's distributor like most of our armed forces, instead of a commercial aviation oil from Mobil?


There was a time when you played "Russian roulette" with the supply system - you'd order 23699 wanting type STD or C/I and you'd receive a drum of HTS which had some seal compatibility problems in certain engines. If I recall correctly, part of the problem was that at the time, all three types in a certain size shared an NSN. This is now fixed.

During this time, we'd procure Mobil Jet Oil II commercially to know what we were getting. It actually wasn't a lot more than the supply system cost. Plus let me say that if you think a Jet II quart can is cool - the 55 gallon drum looks like a huuuuge quart can! Same paint scheme.

Now all we use is Hatco type C/I. Believe they are the only qpl'ed source for c/i.

Royco hyd fluid cans are neat too...

later,
b

 

[Tom NJ]

Hi kd,

Yes I remember those NSN problems. When the Navy switched to C/I they assigned the old STD NSN to the C/I as they did not expect to buy the STD again.

For many years our contract price for 23699 to the military was about half the price charged by major oil companies for branded products with commercial approvals. That has changed in recent years as the military no longer buys directly from producers and use a distributor instead.

There are other qualified formulations under C/I, but the Hatco product is very cost efficient and has a long history of trouble free performance.

Tom NJ