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What oil types can be mixed on an M-14p?

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javiercarrascob

Joined: 06 Sep 2009
Posts: 62
Location: Virginia

Posted: Thu Jul 28, 2011 7:15 pm Post subject: What oil types can be mixed on an M-14p?

Hello Gang,



Hope you are enjoying EAA week, I'm currently using Aeroshell 100W. for my M-14p powered Yak-55m.



As you may know when you do cross country in a '55 there is not much room to bring oil with you.



I find my self landing at FBOs that don't carry either Aeroshell 100W or 120w in summer (80w in winter). Not to mention Phillips 25w-60 is even harder to find (hence I use 100W).



So



Question 1: Can I mix/Blend Aeroshell 100w with 100? I understand that one is ashless dispersant and the other one is straigh mineral (no aditives)?



Question 2 : Can I mix 100w with 80w when it starts to get cold?



Question 3: Can I mix Aeroshell 100w with Phillips 25w-60?



Thanks, Javier

N5245H

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brian(at)lloyd.com
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Posted: Thu Jul 28, 2011 8:26 pm Post subject: What oil types can be mixed on an M-14p?

On Thu, Jul 28, 2011 at 8:15 PM, javiercarrascob <javiercarrascob(at)yahoo.com (javiercarrascob(at)yahoo.com)> wrote:

 	  Quote: 	
		   Question 1: Can I mix/Blend Aeroshell 100w with 100? I understand that one is ashless dispersant and the other one is straigh mineral (no aditives)?

	




Yes.

 

 	  Quote: 	
		    

 Question 2 : Can I mix 100w with 80w when it starts to get cold?

	




Yes.

 

 	  Quote: 	
		    

 Question 3: Can I mix Aeroshell 100w with Phillips 25w-60?

	




Yes.



-- 

Brian Lloyd, WB6RQN/J79BPL

3191 Western Dr.

Cameron Park, CA 95682

brian(at)lloyd.com (brian(at)lloyd.com)

 +1.767.617.1365 (Dominica)

+1.916.877.5067 (USA)



  [quote][b]

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CD 2.0

Joined: 21 Feb 2011
Posts: 43

Posted: Thu Jul 28, 2011 9:02 pm Post subject: Re: What oil types can be mixed on an M-14p?

Javier, not only are all Aeroshell oils compatible with other approved aircraft piston engine oils, but pretty much all oils available are compatible, synthetics, blends and dino oils.  I personally prefer not to mix brands, but in all likelihood it is perfectly safe to do so.  Also elaborate precautions are not needed when changing from similarly approved aircraft engine oils, as long as these oils are qualified products. 



Aeroshell 100 is mainly used as break in oil for new steel or chrome cylinders. It has been said that it isn't particularly good at either lubricating or cleansing... The resulting high levels of friction may speed up the break-in process but isn't approved for "long-term" use in an engine. If you use this type of oil for break in, you should plan to drain it within 15-25 hours (the sooner the better) and replace it with a high quality ashless dispersant (AD) oils as the Aeroshell W 100.



Aeroshell W 100 and W 80 offer good lubrication and good cleansing action. Single grade oil is especially good at protecting engines against internal corrosion, because it is very thick at ordinary room temperature and sticks to engine parts without stripping off as readily as multi grade oils.  However, single-grade oil is not recommended for non-preheated cold weather operation. When starting in sub freezing temperatures... typical hard winters in the North East, single-grade oil may be too thick to provide adequate lubrication in the first minute or two of engine operation.



Phillips 25w-60 is similar to single grade AD oil (W100/80), but has a viscosity index enhancer which causes the oil to maintain a more constant viscosity over a wide range of temperatures... This oil remains much thinner and more easily pourable at room temperature than single grade oil.  This is a great advantage for cold weather starting if a preheat or heated hangar is not available. On the other hand, multi vis oil will strip off engine parts much more readily during periods of disuse... so it doesn't provide nearly as good corrosion protection as single grade oil does. 



AeroShell W80 for cold climate regions (-17 - 21Â°C) 

AeroShell Oil W100 for temperate regions (15 - 30Â°C) 

AeroShell Oil W120 for warmer climates (above 26Â°C). 



Carl



 	  javiercarrascob wrote: 	
		  Hello Gang,



Hope you are enjoying EAA week, I'm currently using Aeroshell 100W. for my M-14p powered Yak-55m.



As you may know when you do cross country in a '55 there is not much room to bring oil with you.



I find my self landing at FBOs that don't carry either Aeroshell 100W or 120w in summer (80w in winter). Not to mention Phillips 25w-60 is even harder to find (hence I use 100W).



So



Question 1: Can I mix/Blend Aeroshell 100w with 100? I understand that one is ashless dispersant and the other one is straigh mineral (no aditives)?



Question 2 : Can I mix 100w with 80w when it starts to get cold?



Question 3: Can I mix Aeroshell 100w with Phillips 25w-60?



Thanks, Javier

N5245H

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wlannon(at)persona.ca
Guest

Posted: Fri Jul 29, 2011 7:55 am Post subject: What oil types can be mixed on an M-14p?

Good posting.  One minor exception - Aeoshell 100 (and all other SUS 100 

Aviation oils0 are indeed certified for continuous flight use.



---

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javiercarrascob

Joined: 06 Sep 2009
Posts: 62
Location: Virginia

Posted: Mon Aug 01, 2011 8:15 pm Post subject: Re: What oil types can be mixed on an M-14p?

Thanks everyone for the clarification, I really apreciated.



Safe landings!

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