Engine Oil

How to keep the Cessna 170 flying and airworthy.

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170C
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Engine Oil

Post by 170C »

Recently there was a discussion regarding Aeroshell vs Phillips oils. I believe that it was stated that one could change between brands, as long as the same specification product was being used, without any danger of causing a problem with a mid time engine. I have been using Aeroshell W100 and W100+ and am thinking of possibly switching to Phillips due to local availability (our Shell distributor has gone out of business). I called the Phillips distributor and the lady said they only carry the Phillips multi viscosity oil? Is the Phillips 66 Type A 100AD the same as Aeroshell W100 (or W100+) ie: 50 wt? I'm curious why a Phillips distributor would only carry the mv oils.
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GAHorn
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Re: Engine Oil

Post by GAHorn »

It's the same specs as the AeroShell W100. They likely haven't had large requests for it?

You can get it delivered, no shipping costs, if you order $75 or more from https://aviationoiloutlet.com/search-results?q=phillips

I ordered 2 cases ($56/case) and got it on my doorstep in 5 days.
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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170C
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Re: Engine Oil

Post by 170C »

Thanks George. Is that Phillips equal to the W100 or the W100 plus?
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Re: Engine Oil

Post by GAHorn »

It's the same as AeroShell W100 but meets the later 301G req. of Lycoming (Aeroshell meets the earlier 301-F). (This is probably only because of a test-date and not likely a significant difference.)

Aeroshell W100+ includes the Lycoming Additive for Lyc Service Bulletins 446C, 471, and Svc Inst. 1409A. The Aeroshell W100 and Phillips 100AD does not contain that additive (which is not to be used in certain applications like helicopter engine combo-transmissions, clutch-drives, or engine break-in, etc.)
'53 B-model N146YS SN:25713
50th Anniversary of Flight Model. Winner-Best Original 170B, 100th Anniversary of Flight Convention.
An originality nut (mostly) for the right reasons. ;)
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lowNslow
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Re: Engine Oil

Post by lowNslow »

Phillips 66 Type A Aviation Oil 100AD = Aeroshell W100
Phillips 66 Victory Aviation Oil 100AW = Aeroshell W100 Plus (Lycoming Additive)
Karl
'53 170B N3158B SN:25400
ASW-20BL
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Avee8or
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Re: Engine Oil

Post by Avee8or »

An update--aviation oil outlet is still the best deal, even less than directly from Phillips. While I haven't had to add oil to my 170, except for changes, my "new" 195 does self lubricate, and a "normal" tank load is 3.5 gallons. Thanks, fellow owners, for the information!
Varel Freeman

170B N3211A
195 N195GW
PA31 N508Y
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