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I've upgraded to 5/30 oil...

Discussion in 'Maintenance & Servicing: Break-in | Oil & Fluids | Technical Docs' started by dblshock, Oct 22, 2016.



  1. dblshock Senior Member

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    Dumped the factory fill @ 3,677mi. and refilled with regular Mobil1 5/30, no more cold start rattle and truth be told much better protection from wear and especially heat. Can clearly hear the difference, very cool. I will be running a UOA on this but being fresh it may take til January for the MM..will keep everyone posted.
     
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  2. Sgtstaadanko

    Sgtstaadanko Senior Member

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    Was thinking of doing this myself, the lightweight oil has to be for fuel economy purposes, protection is minimal.
     
  3. dblshock Senior Member

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    0/20 is all about CAFE, do yourself a favor..

    I don't intend to mod my touring but making the best of what Honda designed is important so I also run E0 91 fuel and juice that with TCW-3 oil..next will be stock size ultra premium tires although the Continential's have been fine.
     
  4. Civics4Ever

    Civics4Ever Ralley Red EXT

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    Good luck!
     
  5. Ckingknowledge Member

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    What evidence do you have that the Honda engineers made a mistake on the engine oil for the engine they designed??
     
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  6. NorthernEX-T

    NorthernEX-T Senior Member

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    Ya I'm thinking on moving up to 5w30 because my last car used that and I really liked it. :rofl:
     
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  7. Sgtstaadanko

    Sgtstaadanko Senior Member

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    Not quite... Now I realize this chart stops at 2011, but it demonstrates that the oils are interchangeable. The viscosity difference between 0 and 5 is not as extreme as you think. The 5 weight may help with oil blow by and valve train chatter during startup. Then again it may not. The thing it's not going to do is destroy your engine.

    View attachment 21405

    yXteN.png
     
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  8. NorthernEX-T

    NorthernEX-T Senior Member

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    How does this chart prove that 5/30 is acceptable in place of 0/20?
     
  9. Ckingknowledge Member

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    It doesn't. This chart is anecdotal and his theory is speculative. Not saying it CAN'T work but I'd rather stick to what Honda's engineers suggest and if something goes wrong it's on them.
     
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  10. Sgtstaadanko

    Sgtstaadanko Senior Member

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    It doesn't, just as I never mentioned which weight I was thinking of switching to. It says 5w20 is equivalent, if you can't see that then there's really nothing else I can say to help. What I'm saying is 100% speculative, take it at face value as just some random guy on the internet saying it. I'm not trying to get anyone else to do anything to their cars, talking about myself. Now if you have some actual evidence as to why this may be a terrible idea, I'm more than willing to listen, as for speculation, it's a double edged sword.
     
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  11. dblshock Senior Member

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    Mobil1 5/30 is a great HTO oil even developed with Honda for the RDX.
     
  12. dblshock Senior Member

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    couple things with the 1.5T, first is the turbo heat, second is DI fuel dilution thinning the oil even further.
     
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  13. ayau Senior Member

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    double post.
     
  14. ayau Senior Member

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    Stick to what the manufacturer recommends and you won't have your warranty denied. It's that easy.

    Will putting 5w30 provide better protection for the engine in the long run? Possibly. The engine should also easily outlast the life of the vehicle by using the manufacturer's recommended oil.

    Will Honda perform for an oil analysis if your engine fails for whatever reason? Probably not. Most 30 weight oil will shear down to 20 weight over time anyway.

    It just doesn't make a difference at the end of the day, so why not stick to the manufacturer's recommendation?
     
  15. ayau Senior Member

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    The current gen WRX have the same problem, direct injection and turbo. Just change it every 3k if you're that worried.
     
  16. dblshock Senior Member

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    this all leads to heavy oil consumption.
     
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