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Message started by john1652 on 02/28/07 at 15:09:26

Title: synthetic
Post by john1652 on 02/28/07 at 15:09:26

If ya go with synthetic oil why can't you return to regular old oil. Some one told this to me and when I questioned him as to why , he didn't know except that is what he has been told. wives tale or truth?? and where is the proof???? also if you have used synthetic you could use synthetic blend he said but why I say oh why can some one please tell me why and stop the insanity. john

Title: Re: synthetic
Post by Greg_650 on 02/28/07 at 15:16:40

I think that might be "Once Upon a Time". I think that I read that they are compatible now.

Besides, don't tell my engine about that. It didn't get the memo.

:)

Title: Re: synthetic
Post by barry68v10 on 02/28/07 at 16:06:50

I'm not familiar with anyone saying you can't go from synthetic to regular oil. For a while they said you can't switch to synthetic on an engine late in life because the synthetic oil would start breaking down all the carbon and sludge. This would cause gaskets and seals, weak from neglect to finally give out, sometimes causing multiple oil leaks at once. Sludge and coking (no, not the kind you sniff ::)) actually does a good job of sealing leaks even though they are very counter productive for lubrication.

John, I'm calling "myth" on this one.

Title: Re: synthetic
Post by slavy on 02/28/07 at 16:24:24

Don't believe all the crap some self proclamed specialist is telling. If You go to any store You will find "synthetic blend" oil. This should be enough.
If You want a better example, just mix in a clear cup the 2 kinds of questionable oil and if they don't separate, You should be OK.
I have been told the same things about mixing different vicosity oils, and about mixing oils from different manufacturers.
Don't forget that even in the "regular" oils, You have synthetic additives.
If You do some research, You will find, that there are only 3 real synthetic polyalphaolefin oils / Mobil 1, Amsoil, and one other, that I keep forgetting/, and Red line is esther based synthetic oil. The rest of the oils are in reality very highly refined petroleum based oils. I know it doesn't sound right, but whoever doesn't believe, let him do some research.
The thing is - WHY would You put the inferior regular oil if the prices are so close and if the bike takes only 2 Qts of oil?

Title: Re: synthetic
Post by georgekathe on 02/28/07 at 16:30:33

re "why put in inferior regular oil" is I presume a refernce to dyno I presume. in my case maybe I'm just a traditionalist!

did try synth about 8 years ago in a Honda 600 enduro - valve sounds were such a racket I changed back & they quietened down (knew did not need adjusting as I'd done it not too long before).

Title: Re: synthetic
Post by john1652 on 02/28/07 at 18:40:53

georgekathe wrote:

re valve sounds were such a racket I changed back & they quietened down (knew did not need adjusting as I'd done it not too long before).

I have noticed this very thing. I just put synthetic fluid in my vl 800 it takes 3 and a half quarts, and when i start it up it really sounds like the valves are ready to come out. now suzuki doesn't recomend synthetic but rather just 10 40 or 15 50 with the jso or whaterver the japaneese thing is or a another high grade oil. i just think all that valve noise can't be good for the bike.

Title: Re: synthetic
Post by slavy on 02/28/07 at 21:01:04

When using a synt. oil try to use the correct viscosity.
The biggest advantage in using synt. oil is that it keeps the same characreristics in wider ambient variables and for a longer time. There are more advantages, but whoever is interested can do his own research.
In the interest of the truth the damages to the engine are not caused by the oil that somebody put in the engine, but by the oil, that he neglected to put.
It is a proven fact that engines don't run good without oil inside. Almost everybody knows this, but the experiments continue and with the same result ;).

Title: Re: synthetic
Post by Savage_Rob on 03/01/07 at 09:00:48

I've known a couple of HD guys who really wanted to go synthetic and when they put it into their bikes, they leaked like seives. Both of these guys used Royal Purple. One of them is now using a synthetic blend and he says his bike doesn't leak any worse than with dino juice. The other huy just went back to Rotella. I've never tried Royal Purple. I've only used Mobil1 V-Twin 20W-50 and Maxum4 Extra 15W-50 and have had no problems on my 98 LS650.

Title: Re: synthetic
Post by john1652 on 03/01/07 at 17:56:10

slavy wrote:

It is a proven fact that engines don't run good without oil inside. Almost everybody knows this, but the experiments continue and with the same result ;).

that is so funny it's almost true. LOL thanks for that info i will always remember it and hold it dear i agree lube is our friend john

Title: Re: synthetic
Post by steveh on 03/02/07 at 04:06:08

In the for what it's worth dept.: my experience has been that engines that leak a little will leak more with synthetic. I have used synthetic in my bikes for years and never had one leak yet. I have no fear of mixing modern engine oil and do so all the time. There are a lot of engine oil myths out there, that's for sure!

Title: Re: synthetic
Post by Greg_650 on 03/02/07 at 04:58:27

steveh wrote:

Yeah, if you hang around this forum long enough, you'll find that myths exist for all petroleum products. Eh?

8)

Title: Re: synthetic
Post by rokrover on 03/02/07 at 08:32:20

Yes indeed, lots of myths and urban legends out there about oils. In the real old days air-cooled racing engines would use castor bean oil that IS incompatible with petroleum (mineral based) oil. These days common synthetics like Mobil 1 (PAO or poly alpha olefin base) or Motul (polyester base) are fully compatible with oil refined from crude oil petroleum base stock.