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Motor Oil for Turbo Props #5143239 06/24/19 09:12 PM
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Snagglefoot Offline OP
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I was sitting next to the engine and got to see the acceptable oils on a Saab 340B turbo prop. Enjoy.

66DC939C-7FDC-47B4-9A26-446FB83DB303.jpeg2674C578-E2C6-4A40-A256-7237AB7B8A6A.jpeg672EFEA6-4D0B-45DD-8F9F-588167DF362A.jpeg
Last edited by Snagglefoot; 06/24/19 09:15 PM.

If you want the job done right......do it yourself.
Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5143280 06/24/19 10:03 PM
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Marco620 Offline
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Wow! I know that had to be a cool time


15' Civic 1.8 i-vtec 288,000 mi Motul 0w30 & LG Biotech, BP CVT Fluid,Redline Si-1
Doberman Whisperer!
Honda,Doberman,CZ's & SONY Aficionado

Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5143292 06/24/19 10:25 PM
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rubberchicken Offline
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nice memories of the Saab 340- first time I flew one I met my wife. Second time I flew on one I joined the "club" with my wife. Good times.

Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5143329 06/24/19 11:31 PM
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BusyLittleShop Offline
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AeroShell Turbine Oil 500 viscosity @40C 25.2cSt @100C 5.1cSt compared to

AeroShell Oil Sport Plus 4 10w40 viscosity @40C 94.2cSt @100C 14.4cSt

Since either viscosity will meet your gears longevity expectations... protection really
comes from the base oil + additives rather than high or low viscosity...
[Linked Image]


Larry L
Have a Wheelie NICE day
94 RC45 #2 58,000 on 30 Grade, Currently Mobil 1 5W30 SN
2002 Camaro Mobil 1 5W30
1952 De Havilland Chipmunk



Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5143421 06/25/19 05:40 AM
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Virtus_Probi Offline
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Neat photos...never heard of Stauffer??
Except for Marty Stauffer and Wild America...


2014 Forester XT, 105000 miles
Last Change;
PP 5w30 d1G2
Tokyo Roki 15208AA170 filter
Re: Motor Oil for Turbo Props [Re: BusyLittleShop] #5143422 06/25/19 05:40 AM
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Shannow Offline
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Originally Posted by BusyLittleShop

Since either viscosity will meet your gears longevity expectations... protection really
comes from the base oil + additives rather than high or low viscosity...
[Linked Image]


Mate, as discussed in the various threads that we've discussed over the years, the "Little Golden Book of Oil" isn't lubrication fundamentals 101...not even close.

At least use a picture of a viscometer, and get an understanding what and how it is measured (yes, you are referencing your "time flow" concept that's still not correct.

And pictures of balls versus blocks of oil doesn't cut it either...

as to the rest of the statement, the 10W-40 etc...What ???


If it's the truth....it can handle the pressure !!!
Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5143423 06/25/19 05:41 AM
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Shannow Offline
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Originally Posted by Snagglefoot
I was sitting next to the engine and got to see the acceptable oils on a Saab 340B turbo prop. Enjoy.


Yeah, I take those pics if I'm in the right seat...
I've got a Saab one...sure I've got a 737 one floating around on the Camera phone


If it's the truth....it can handle the pressure !!!
Re: Motor Oil for Turbo Props [Re: BusyLittleShop] #5143511 06/25/19 07:39 AM
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Snagglefoot Offline OP
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Originally Posted by BusyLittleShop
AeroShell Turbine Oil 500 viscosity @40C 25.2cSt @100C 5.1cSt compared to

AeroShell Oil Sport Plus 4 10w40 viscosity @40C 94.2cSt @100C 14.4cSt

Since either viscosity will meet your gears longevity expectations... protection really
comes from the base oil + additives rather than high or low viscosity...
[Linked Image]

There was some really useful info here such as the the viscosity of the Aero Oil and a review of the viscosities and grades. Sorry the guy with the 43,000 posts doesn't like your image of the viscometer. smile


If you want the job done right......do it yourself.
Re: Motor Oil for Turbo Props [Re: BusyLittleShop] #5143809 06/25/19 01:21 PM
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ZeeOSix Offline
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Originally Posted by BusyLittleShop
AeroShell Turbine Oil 500 viscosity @40C 25.2cSt @100C 5.1 cSt


That's on the botton end of 12 weight per SAE J300.

Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5143893 06/25/19 03:12 PM
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Shannow Offline
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[quote=Snagglefoot
There was some really useful info here such as the the viscosity of the Aero Oil and a review of the viscosities and grades. Sorry the guy with the 43,000 posts doesn't like your image of the viscometer. smile[/quote]

No, there's a long history of BLS posting goldn book and incorret "facts" on lubricants...planks skitting over ball bearings of "uniform molecule size referring to viscosity as the "time flow" charateristic of lubricatants...

And bringing nonsensical statements and inferences....seriosuly, the 10W40 oil developed for Rotax engines will protect the gearbox ?

of what ? your turboprop ?

Rotax oil isn't going anywhere NEAR that compartment.

Base oil and additives are more inportant in a lubricant sense than viscosity ?
Then the image states that it's the most important parameter ?

That stems back to his defending the use of M1 0W30 in the mixed compartments of motorcycles, and defenfding that to the hilt in spite of JAMA recommendations...

"Golden Book", unreaslistic oversimplifications don't help others learn REAL information.


If it's the truth....it can handle the pressure !!!
Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5144007 06/25/19 05:38 PM
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Tom NJ Offline
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That must be an old engine. Only the AeroShell 500 and Mobil Jet II are still available. The Exxon Turbo Oil 2380 became BP Turbo Oil 2380 about 19 years ago and became Eastman Turbo Oil 2380 in 2014. The Castrol 205 and Stauffer Jet II oils are as old as the hills and neither has been in the market for decades. All of these oils were originally qualified against the MIL-L-23699 specification (now MIL-PRF-23699) which are known as 5 cSt oils due to their viscosity @ 100°C. There are also 3 cSt oils available under the Mil-PRF-7808 specification. Jet oils are all based entirely on polyol esters and are very thin but very stable.

Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5144049 06/25/19 06:58 PM
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Cujet Offline
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I knew at least one aircraft tech (in training) that used 2380 in his car. I think it was a 2.8L V6 Camaro from the 1980's. The super clean but used, "free" oil was just too tempting. I was working for Mobil oil in their flight department at the time. We were doing oil and grease product testing on the company's corporate jet fleet. So we had a bunch of "waste" but perfectly new-like oil.

Anyway, this kid used it regularly, he was not a certified tech and really did not understand what he was doing. I don't recall the end results, but I remember him popping the hood and hearing that engine clatter loudly.

But I was driving a prepped but worn, ex race car Ford Fiesta with only one seat, so who am I to talk?

Last edited by Cujet; 06/25/19 07:01 PM.

People who count on their fingers should maintain a discreet silence.
Re: Motor Oil for Turbo Props [Re: Tom NJ] #5144095 06/25/19 07:48 PM
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Snagglefoot Offline OP
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Originally Posted by Tom NJ
That must be an old engine. Only the AeroShell 500 and Mobil Jet II are still available. The Exxon Turbo Oil 2380 became BP Turbo Oil 2380 about 19 years ago and became Eastman Turbo Oil 2380 in 2014. The Castrol 205 and Stauffer Jet II oils are as old as the hills and neither has been in the market for decades. All of these oils were originally qualified against the MIL-L-23699 specification (now MIL-PRF-23699) which are known as 5 cSt oils due to their viscosity @ 100°C. There are also 3 cSt oils available under the Mil-PRF-7808 specification. Jet oils are all based entirely on polyol esters and are very thin but very stable.


Understandable.. The plane was manufactured between 82 and 99. smile


If you want the job done right......do it yourself.
Re: Motor Oil for Turbo Props [Re: BusyLittleShop] #5144766 06/26/19 01:34 PM
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Originally Posted by BusyLittleShop
AeroShell Turbine Oil 500 viscosity @40C 25.2cSt @100C 5.1cSt compared to

AeroShell Oil Sport Plus 4 10w40 viscosity @40C 94.2cSt @100C 14.4cSt...



It makes no sense to compare a four-stroke engine oil with a Turbine oil! ??? because there are different base oils used, different viscosities, different additives involved, and totally different applications.

AeroShell Oil Sport Plus 4 is the world’s first oil specifically developed for light sport, very light and ultralight four-stroke engine aircraft. It is multigrade for use in any climate and combines synthetic and high-quality mineral oil with advanced additive technologies for excellent performance, wear and corrosion protection, and cleanliness with leaded and unleaded fuels.

Last edited by MolaKule; 06/26/19 04:54 PM.

"Dr. Larry Fleinhardt:
You know that it's considered unsolvable?
Charlie Eppes:
Well, certainly people who have failed to solve it might think that." From NUMB3RS
Re: Motor Oil for Turbo Props [Re: Snagglefoot] #5144954 06/26/19 05:02 PM
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Mola, if I put turbine oil in my little 150 SYM will it go like a jet ?? wink2


2016 Dodge GC Deep Cherry 5W-30 Dino
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2009 V-Star 250 Black Cherry 20W-50 Dino
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