Mfg oil vs Synthetic for breaking in

[pecheux]

As much as I appreciated using Amsoil Injector in my 1981 Johnson 9.9 ... I dont find the same result with my newer 1997 Force 15hp.<br /><br />This engine has probably less than 50 hours on it and may not be broken in properly yet ... (?)<br /><br />And if that is the case would it be possible that it would need regular mfg oil instead of Synth ? At least for a while.<br /><br />But then again ... what is mfg oil for a discontinued Force outboard ? LOL<br /><br />Cheers to y'awl,

 

[05GlastronSX]

Re: Mfg oil vs Synthetic for breaking in

mercury 2 cycle oil or quicksilver(same thing) would be the mfg's recommendation. You can try using this and see if it makes a difference but i dont see how synthetic would cause problems.

 

[cobra 3.0]

Re: Mfg oil vs Synthetic for breaking in

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[LubeDude]

Re: Mfg oil vs Synthetic for breaking in

Originally posted by pecheux:<br /> As much as I appreciated using Amsoil Injector in my 1981 Johnson 9.9 ... I dont find the same result with my newer 1997 Force 15hp.<br /><br />

And that would be????????????????????

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

It is well past broken in at 50 hours.<br /> The whole synthtics are not good for break in thing is bunk based on old wives tales. Mobil 1 synthetics come as factory fill in many cars.

 

[cobra 3.0]

Re: Mfg oil vs Synthetic for breaking in

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[dajohnson53]

Re: Mfg oil vs Synthetic for breaking in

Originally posted by pecheux:<br /> As much as I appreciated using Amsoil Injector in my 1981 Johnson 9.9 ... I dont find the same result with my newer 1997 Force 15hp.

What were the results that you had in the 9.9 that you are not having in the 15?

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

I think I had mentioned that on another forum. But here it is:<br /><br />Johnson 9hp = smoother idling, engine noise reduction, less smoke, more rpm at wot, kwick acceleration. performs like a 12hp. <br /><br />Force 15hp = hardly less smoke, no more rpm, no smoother idling, (rougher even) no less engine noise,(noisier even) no more rpm at wot, kwick trottle response = Yes<br /><br />Johnson = from Castrol to Amsoil Injector<br />Force = from Qwicksilver to Amsoil Injector<br /><br />tx<br /><br />Ps: the force had not been running for 3 years.

 

[JB]

Re: Mfg oil vs Synthetic for breaking in

When I bought a new DF70 from Suzuki, I was told by the Suzi Rep. specifically not to use synthetic until after break-in, which was 20 hours.<br /><br />Then I went to Mobil 1.<br /><br />Myth or not, that engine never experienced the "making oil" phenomenon that plagues so many 4 stroke outboards.<br /><br />Maybe just coincidence.<br /><br />On the other hand, Mercedes told me to never put anything but Mobil 1 in either of my MLs, but I think they are pre-broken in.

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

"Johnson 9hp = smoother idling, engine noise reduction, less smoke, more rpm at wot, kwick acceleration. performs like a 12hp. <br /><br />Force 15hp = hardly less smoke, no more rpm, no smoother idling, (rougher even) no less engine noise,(noisier even) no more rpm at wot, kwick trottle response = Yes"<br /> Its all in your head.....

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

Ben Walker: I ve had that Johnson 9.9 since new, it ran on Castrol (or Omc) all it's life and ran real good at all times, and still does. I admit I'm not credible but even the sound of that engine is different (sounds tighter)<br /><br />I dont realy beleve it's an AMsoil coincidence ... I think it's a synthetic oil one.<br /><br />Anyway this Johnson stays until I m fully satisfied with the earlier Force. LOL<br /><br />Cheers

 

[05GlastronSX]

Re: Mfg oil vs Synthetic for breaking in

Anyway this Johnson stays until I m fully satisfied with the earlier Force. LOL

Well, then it seems that johnson is going to be staying for a very, very long time then... ..sorry i had to...

 

[LubeDude]

Re: Mfg oil vs Synthetic for breaking in

Originally posted by cobra 3.0:<br /> The key is "current engine manufacturing technology does not require a break in period". We're talking cars here that have a "no break in period technology". Yet some boat engine manufacturer's still require a break in period as it clearly states in many owner's manuals out there. So it may be ok or it may not be.

This is absolutly the key!<br /><br />If you rebuild and engine yourself, you cannot duplicate the fine cylinder honing that is done at the factories that are using synthetic from start up. Many new engine manufactures do not have this technology yet either.<br /><br />What kind of coolaid have you been drinking latley Ben, your are getting a bit lose on us here.

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

05GlastronSX: LOL LOL Obviously you got a point, did buy the Force for more power ... period ... and that's only what I got more so far. <br /><br />Main disapointement is this Force 15hp is hard to start when cold ... like needing 6 to 10 hard pulls ... once started it runs ok for the rest of the day. My Johnson ALWAYS started on the second easy pull. <br /><br />As for the rest of comparisons I would think the Force would be the LADA of outboards. LOL Sooo I am not offended by your (I had to) LOL<br /><br />Cheers

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

lubedude: Do I read that perhaps I should use Quicksilver for a while in that there Force 15 since it had not been operational for 3 years ?

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

The only Coolaid drinkers are the Amsoil peddlers and the people they dupe.<br /> To suggest Amsoil makes motor run smother is a joke and in no way can be substantiated.<br />Lubedude, do you have any test data to back up any of the claims you make on Amsoil behalf?

 

[tommays]

Re: Mfg oil vs Synthetic for breaking in

It would seem to me that model jonny is just a better motor than that model force<br /><br />Or maybe the force just needs some work to bring back to good running condition<br /><br />I know i made the mistake of buying a 4 HP chrysler that was in package deal with a sailboat and it NEVER ran good compared to other motors i had owned<br /><br />tommays

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

"The key is "current engine manufacturing technology does not require a break in period". "<br /> That is not the key at all. Wether a engine requires break in or not has nothign to do with synthetic oil harming engine break in.<br />Synthetic two cycle oils do not hinder breakin.

 

[Bwalker]

Re: Mfg oil vs Synthetic for breaking in

Another way to look at is to ask the question- what properties of synthetic oil would allow them to hinder break in?<br />Also consider that many TCW3 oils today are at least partially synthetic.

 

[pecheux]

Re: Mfg oil vs Synthetic for breaking in

Ben Walker: No Amsoil dealer made me drink coolaid, I ran an 8 hours test for a mecanic friend's curiosity (and mine) using that AMsoil Injector oil. the result I posted to you are the ones I reported to my friend who as 42 years outboard mecanic experience (and still) and this guy knows my background enough to thrust what I tell him. <br /><br />The results I wrote STAND ... I am knowed as having a pretty good ear for engines. I thought of going back to OMC oil to double check ... but then I need time for fishing ... LOL <br /><br />I am sharing information only, I dont sell oil and as far as I am concerned This Amsoil Injector oil STAYS with that Johnson 9.9 as would any oil giving me those improvements.<br /><br />As far as I know OMC's are built different than other outboards in term of piston clearance in cylinders, not having a tight fit as other mfgs, and those hard to belevee results may have something to do with just that. <br /><br />regards<br /><br />PS: forgot to mention that idling speed was also faster and I had to turn the ajustement knob 1 turn counter clockwise to bring the trolling speed back to its original Loowww rpm, which leads ne to beleve this oil produces less friction.