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10w40 safe?

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    #16
    I've used all 10w30 on my f22a1:

    Castrol syntec
    Royal Purple
    NEO synthetics (currently)

    IMO the NEO has been the best one I have used...but $12 a bottle (ouch)

    ______________________________
    "I ran open header once, it was sooooo loud little kids were running for cover as I was cruising at 2000rpms. That was enough to know I shouldn't floor it."

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      #17
      I use 10-40 in winter and if i still have this engine in summer ill switch to 20W50, I live in a very hot climate (it can get to 130 in summer sometimes hotter ) , And my engine burns oil like crazy so if i ran anything thinner i would be buying oil like crazy,
      when i get a lower mile engine it will run 10w30 in winter/10w40 in summer , and when i get my old engine rebuilt it will use 5w20 mobile 1
      Blake.
      1994 Accord Part out!
      Me and my step dad's 1991 Accord EX Coupe MRT

      82 accord-rip, 94 geo-sold, 82 cavilier-rip,81 civic-rip,88 accord- rip, 88 legend- rip, 91 civic- sold,97 geo-sold, 92 accord- sold 94 accord- RIP, 1990 Camry- RIP

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        #18
        Originally posted by 93.4dr.22A1 View Post
        Its all in your head. dont gain any performance from changing the oil.
        People have seen gains of around 5whp from changing oils. Of course the chance of a 20 year old honda engine seeing a gain of 5whp is slim to none.
        Current 2016 Ford F150 XLT Sport
        Past 1990 Accord EX Sedan
        Past 1990 Accord LX Sedan
        Past 1991 Accord LX Sedan
        Past 1993 Accord LX Wagon
        Current 1991 Accord EX Wagon

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          #19
          The whole idea behind using a heavier oil for an old engine is to bring up the oil pressure. An engine will begin to loose oil pressure as bearings wear. Using a heavier oil or a viscosity builder like STP can extend the life of an engine.

          Oil viscosity builders were first used by the German air force in WWII to extend the period between engine rebuilds.
          Last edited by dano28; 12-14-2009, 09:20 AM.

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            #20
            I always feel the car pick up more when I change my oil.....and I even used 10w-40 on my transmision and worked for about 3 months till the trans finaly shot

            Links to my rides :
            1992 Accord EX*
            1990 Accord EX
            1991 Accord SE (4th)
            1991 Accord SE (3rd)
            1991 Accord SE (2ND)
            1991 Accord SE

            Comment

              #21
              Originally posted by fatboy1185 View Post
              People have seen gains of around 5whp from changing oils. Of course the chance of a 20 year old honda engine seeing a gain of 5whp is slim to none.
              Sure, you could gain some power by changing your oil. If you haven't changed your oil in a long ass time.
              R.I.P. Veronica - JDM F20A swapped 2.0 Si wannabe.

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                #22
                I have to admit, even though it has never been proven, that I noticed a better acceleration after an oil change. Hp gain I don't think so. The only thing I personally chock it up to is that as the oil viscosity breaks down you lose a lil bit of engine compression, and once the oil is changed, your compression goes back up. Just my personal observation.

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                  #23
                  As far as picking up power/speed with an oil change, only a dyno is actually going to prove that.

                  As far as weight is concerned, it really comes down to the engine. Honda now specifies 0-20 on even their older engines like the f22. Now, while a brand new f22 can benefit from a thin oil like this that can get in all the tight crevices, an older f22, like many of us own, don't have such tight crevices anymore and need a thicker weight oil when it's warm.

                  A thinner weight will help with startup oil pressure, but it also needs to be thick enough to protect the engine during this cold state. Otherwise, it's still not helping.

                  I have to run 0-40 Mobile1 synthetic in my Porsche and Mercedes. The Accord, Altima, and Galant get 0-40 Amsoil. The Corvette needs 20-50w because the engine is looser and modded.

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                    #24
                    10w-40 save me better in fuel economy,no smoke issue & no burnt oil. I will have to say if you have a high mileage engine between 200,000 miles on your car I'll rather start using 10w-40 for thicker oil, because protect your engine really good & dont sprung leaks. Thats my opinion.

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                      #25
                      A motor is happier with fresh oil in it compared to dark burnt oil. So it can develop the power more adequately. And a higher weight oil does not necessarily mean more resistance.

                      edit: I use Delo 15w40 every oil change.

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                        #26
                        Originally posted by gcvphoto View Post
                        A motor is happier with fresh oil in it compared to dark burnt oil. So it can develop the power more adequately. And a higher weight oil does not necessarily mean more resistance.

                        edit: I use Delo 15w40 every oil change.
                        dang your car must be burning oil!

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                          #27
                          I don't know where you would get that from. Mine doesn't burn oil at all. Speaking from knowledge I've gathered while working on people's cars.
                          Originally posted by HoNdaInspire01 View Post
                          dang your car must be burning oil!

                          Comment

                            #28
                            no, thicker oil will just seal the cylinders better if your burning oil to begin with.. In genenral, thicker oil usually robs power if anything. Stick to your suggest oil weight which I believe is 5-30 or 10w-30. Go synthetic if you would like to improve*

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