oil viscosity recommendation

Discussion in 'Maintenance Bay' started by john cronin, Jul 22, 2020.

  1. john cronin

    john cronin Filing Flight Plan

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    In the northeast, through the seasons, I would use a 20w-50wt in my 0360.
    I am moving to florida ( Daytona) in August and was wondering what the best straight weight oil i used when i am there. 100wt or 120wt? or should i just stick with 20w-50?
    Thank you
     
  2. Stewartb

    Stewartb Final Approach

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    Read your engine manufacturer's instructions.
     
  3. Ryanb

    Ryanb Touchdown! Greaser! PoA Supporter

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    15W50 or any straight weight oil through W100 is fine.
     
  4. rbridges

    rbridges En-Route

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    I live in central GA, and the local shop sells W100. IIRC, the low end is 40 degrees F. Probably doesn't matter, but I started using 15w50 a few years back.
     
  5. Low Level Flyer

    Low Level Flyer Filing Flight Plan

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    I’m in southern AL and use 20W50 year round. Good for our hot summers and also my trips to the midwest during winter.
     
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  6. idahoflier

    idahoflier Line Up and Wait

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    Keep in mind that if you're thinking about Aeroshell 100, W100, 120 or W120, the SAE (wt) is 50 and 60 respectively...
     
  7. SloRoam

    SloRoam Pre-Flight

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    My Continental and starter do better with straight weight, and FL suggests w100 with camguard.
     
  8. sourdough44

    sourdough44 Pattern Altitude

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    Even up here in WI I often use 100w in the heat of Summer, back to multi for Fall oil change. No biggie, could use multi year round, or mix it up.
     
  9. Challenged

    Challenged Pattern Altitude

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    Here's the Aeroshell guidance based on the average ambient outside air temperature, in Fahrenheit, at engine start-up.
    (SAE40) 80 and W80 = 1.4 to 69.8
    (SAE50) 100, W100 and W100 Plus = 60 to 89.6
    (SAE60) 120 and W120 = Above 78.8

    Info taken from this pdf.


    Does anyone know the temperature recommendations for their 15W-50 product? All I can find is "wide range of ambient temperatures", perhaps that means that pretty much anything goes?
     
    Last edited: Jul 23, 2020
  10. Domenick

    Domenick Pre-takeoff checklist

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  11. chemgeek

    chemgeek Pattern Altitude

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    Mono-grade oil is just not practical in changeable climates like we have in Central NY. In late summer, it could be 30F in the morning and 85F in the afternoon, and in the 90s then next week. I used Aeroshell 15W50 for years and years in my first engine with no apparent issues. With my new engine, I'm still using up my stock of Exxon Elite 20W50, and will probably switch to Phillips 20W50 and CamGuard. But the Aeroshell would be fine, I think, especially where it gets very cold. Just fly a lot to keep corrosion at bay. Which oil is probably a lot less significant than regular operation.
     
  12. Matthew Rogers

    Matthew Rogers Line Up and Wait

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    I use XC 20-50 but only use cam guard in winter. The plane flys nearly every week. Seems like that is enough for a continental, right?
     
  13. Ryanb

    Ryanb Touchdown! Greaser! PoA Supporter

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    Yep
     
  14. CRQFlier

    CRQFlier Pre-takeoff checklist

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    Have you considered the Phillips Victory instead of XC+camgaurd?

    Sent from my SM-G960U1 using Tapatalk
     
  15. Tom-D

    Tom-D Taxi to Parking

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    at that temp. you should be pre-heating.
     
  16. Dana

    Dana Pattern Altitude

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    The Lycoming additive in Victory isn't a substitute for Camguard, and vice versa.
     
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  17. chemgeek

    chemgeek Pattern Altitude

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    Victory contains LW-16702, the Lycoming anti-scuff additive which is not required for my engine. This additive is not the same as the anti-corrosive agents in CamGuard.
     
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  18. JOhnH

    JOhnH Touchdown! Greaser!

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    Welcome to Daytona Beach. Just don't come down here for a few days. (We are having a bit of a weather situation developing right now). I live in Ormond Beach. What brings you down here?

    When I had my C172 with a Lycoming O360 I ran Aeroshell 100 Plus year round on the advice of the guy that sold me the plane, and my mechanic. If it ever got too cold I just spun the prop a few times before starting it. Of course though, My O360 blew up in flight at around 1,000 ft one day, so I'm not sure if my suggestion is all that good. I now use Aeroshell 100w (no Plus) in my Continental IO520.
     
  19. Ryanb

    Ryanb Touchdown! Greaser! PoA Supporter

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    Ever determine the cause?
     
  20. JOhnH

    JOhnH Touchdown! Greaser!

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    TSA report said engine ran out of oil. But I could have told them that. It had 5 qts during pre-flight and I added one bringing it to 6/8, like always.
    When we put it down on the highway about 10 minutes later it looked like it had about 5 qts on the bottom of the engine and hull and it was still dripping. Funny thing though, I saw no oil around the big hole in the top of cyl #4. Which leads me to believe it wasn't the oil (or lack of it) that caused the failure.
     
  21. Domenick

    Domenick Pre-takeoff checklist

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    TSA report or NTSB?
     
  22. JOhnH

    JOhnH Touchdown! Greaser!

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    Oops. You’re right. At least I got the “TS” in there.
     
  23. Daleandee

    Daleandee Pre-takeoff checklist

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    Mine is an experimental engine but I do what the manual says, i.e. I use 15W40 year round here in Carolina.

    The engine manufacturer knows more about your engine than most anyone else ... go with their recommendation.
     
  24. PaulMillner

    PaulMillner Pre-takeoff checklist

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    The multi-weights are good for any temperature you might conceive of going flying. That said, if ambient is close to zero Fahrenheit, you might consider the AeroShell semi-synthetic over the Phillips non-synthetic... but absent that, the Phillips WITHOUT TCP/TPP is better for your engine.
     
  25. PaulMillner

    PaulMillner Pre-takeoff checklist

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    Who sells an aviation 15-40?

    Certainly you want to consider their recommendation... but the ASTM discussions on unleaded avgas, for instance, have convinced me that engine and airframe manufacturers aren't all that savvy on hydrocarbons... so do your OWN research.
     
  26. PaulMillner

    PaulMillner Pre-takeoff checklist

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    Both Victory and AeroShell 15-50 contain TCP/TPP, which disassociates to form phosphoric acid in the engine... this contributes to the anti-scuff layer on the camlobes and lifter bodies, but unless there's an AD that requires it is your engine, you're better off avoiding adding acid to your oil, and instead use an anti-corrosion treatment like Camguard.
     
  27. Daleandee

    Daleandee Pre-takeoff checklist

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    I have no idea. My experimental aircraft uses an experimental engine.
     
  28. CRQFlier

    CRQFlier Pre-takeoff checklist

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    #1409c is for basically all lycoming engines to use the anti scuff, but it's not an AD for sure. It's an instruction. Is camgaurd incompatible with the anti scuff? Sorry for the new owner questions.

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  29. PaulMillner

    PaulMillner Pre-takeoff checklist

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    That's incorrect... 1409C *is* required by AD for the O320H2AD Lycoming, as well as the similarly designed "76" series 360 engines (only a handful of those were built). The SI says it's a good idea for all Lycomings... but Camguard is a much better idea, since it doesn't make acid in your engine. Originally, Lycoming used TCP, tri cresyl phosphate, as the additive, which was acceptable in my mind. Then the EPA frowned on the more toxic isomers of TCP... and Lycoming went to TPP, which is NOT acceptable in my mind... FWIW.

    See my article in Aviation Consumer last year...
     
  30. PaulMillner

    PaulMillner Pre-takeoff checklist

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    Ah! You're one of those guys who likes to play 20 questions?! :)

    OK, what experimental engine specifies 15W40, since you're saying the engine manufacturer knows more about your engine? And what flavor 15W40 do they recommend?

    Paul
     
  31. CRQFlier

    CRQFlier Pre-takeoff checklist

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    OK. I've got an 0320-e2g, so it's recommended by 1409C but not required via an AD. So either XC or non-plus aeroshell, plus camgaurd. Rather than Victory or Plus, plus camgaurd. Have you got a link to your article?

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  32. chemgeek

    chemgeek Pattern Altitude

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    You can add CamGuard to pretty much any oil you want to use. The LW-16702 additive is not required for an O-320-E2G engine, but is not likely to hurt it. CamGuard is an anti corrosion additive, and worthwhile if you ever fly infrequently. Many owners use Phillips XC 20W50 mineral based oil plus CamGuard, as it's the cheapest option. AeroShell 15W50 is semi synthetic and should also be OK, but is more expensive. You can add Camguard to it, too.
     
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  33. Daleandee

    Daleandee Pre-takeoff checklist

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    Hi Paul,

    Apologies ... I'm not trying to be a 20 questions guy. :D

    My Aircraft has a William Wynne (Fly Corvair) 3.0 Corvair conversion in it that was built by Dan Weseman (Sport Performance Aviation). The recommended oil for these engines is Shell Rotella T4 Triple Protection Conventional 15W-40. More info on the why of using it in these engines is here:

    https://flycorvair.net/2013/06/26/notes-on-corvair-flight-engine-oils/
     
  34. PaulMillner

    PaulMillner Pre-takeoff checklist

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    Cool! I attended the Corvair Engine College a few years ago in Livermore... very interesting what is done with those engines! :) I was intrigued... they had the test stand running, and a couple of folks' aviation conversions got their first runs, other folks were dialing in their Lycoming-style starter installations, the merits of adding the thrust bearing were discussed and demonstrated (painfully...)

    Paul
     
  35. Daleandee

    Daleandee Pre-takeoff checklist

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    There is Corvair College in Barnwell SC in November. There will be a number of Corvair powered planes there. Probably the most intriguing will be this twin engine Corvair powered experimental:

     
  36. WannFly

    WannFly Final Approach

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    this is my combo all year around. summer 90 degrees ... winter well there is no end to it, but i have stopped flying when it gets below -10 ambient...
     
  37. PaulMillner

    PaulMillner Pre-takeoff checklist

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