Triumphrat

exlimeydedbt

O forgot, semi-synthetic is BS, kinda, try and get them to say how much synthetic is in oil, as low as 5%, what a bloody scam

Snakeoil

Actually the term synthetic itself is misleading. Several years back the oil companies were going after the true synthetic guys and the courts decided and I believe API, that you could use the term "synthetic" to describe your oil if it met certain specs. So, that means it can be labeled synthetic, yet be fossil based oil.

regards,
Rob

loxx101

Only in America I believe. UK/European law states that if it's labelled as Synthetic it has to be synthetic.

rambo

Hope its real synthetic in the Uk because i just bought 600 litres for my repair garage.A few comments about what it might or might not do to bearings etc.I am not against the stuff and use a lot of it.I just feel i made an error putting 0/40 in my old Triumph.
turning this into an oil thread yet again,The 20/50 Mobil vee twin oil is great for an old Triumph

exlimeydedbt

Correct Rob, kinda,Amsoil agrees with you Syntec is one of the worst Amsoil and Mobil1 are the best I think, there is only one tru synthetic 100%, cannot think of the name,but it costs $20 a liter

Snakeoil

It's been a long while since I've read thru the Amsoil website. I do remember that they listed the various syn oils on some scale that ranked them.

Everytime a discussion comes up about oil, I post this link which I find to be an excellent resource on oil written by somebody that did the research work to develop some conclusions. It answered some questions I had as well as changed a beliefs I had regarding oil.

http://www.calsci.com/motorcycleinfo/Oils1.html


I'm doubtful that there will ever be a consensus on oils. Think about it, most of us base our comments on either first hand experience with a few bikes, or on third party info, such as the thread below. If you talk statistics, one bike failing with a certain type of oil in it, does not necessarily mean the oil was the root cause. It might have contributed, but there could be other factors that went unnoticed.

And I think oil threads will continue to abound because new folks come along every day and have the same questions that many of us had when we first started. I tend to believe that the only folks who are informed enough to truly make intelligent decisions regarding oil types are folks in the oil industry, OEMs of vehicles and in the private sector folks like race teams, very seasoned dealer/repair shops and maybe restoration shops. I'm the first to admit that I know squat about oil other than what I've read. Yet I can probably make a good argument for using a type of oil given what I've learned. Does that make me right? Certainly not. When all is said and done, the same mantra ends being said during every oil thread and it probably the only thing all will agree on when it comes to oil selection for street motorcycles. Use a quality oil, of the proper rating and specification, and change it per the OEM guidelines or sooner and you are all set.

regards,
Rob

brid

Jeez - I wasn't aware this would go on so long !! I guess it's 'another oil thread'
The only post I've made was based on honest findings, and a long few years seeing results of 'oil abuse' and - conversely, great results from the correct oil being used in the right application. An old friend of mine worked in the oil industry when synthetics were becoming more available, and once told me "It's hard to find a (named) 'bad' oil in this day and age. Just don't expect miracles from any oil".
He was referring to the fact that, in any application, any oil will NOT negate poor engineering - whether it be from manufacture or substandard mechanical prowess on the behalf of 'rebuilders'.
A few interesting points raised here - however, nothing to remotely make me veer from what I know and abide by.
Cheers,
Brid.

SevenMonkeys

The last time I had it serviced the local shop put Amsoil in my Subaru WRX (I know, it's not a motorcycle, bear with me for a sec). I've always used dino in it and it just went over 100K miles. I am now getting a little oil seeping from the valve seals. The same thing happened to my Mazda MX6 when I tried synthetic after years of using dino.

Anyone know if a little extra seep from the seals a normal side effect when switching from dino to synthetic?

Snakeoil

There are a lot of urban legends surrounding syn oils, but weeping seals on high mileage vehicles is a common known problem. If you call Amsoil and talk to them, they will (or at least they used to) not recommend you switching to syn if you have high miles on the vehicle.

Syn oils do an amazing job of cleaning out the crud in your engine. And one of those areas is worn seals. As I understand it, they can become packed with crud and when the syn cleans them out, they start to leak. I had a friend have this happen when he moved to Mobil 1 on his dump truck fleet. Each new truck used syn oil and when he only had a few old trucks left, he switched them to syn and they leaked.

regards,
Rob

SGOUD

I have a T140E with 10000 miles on it. I'd like to use Mobil1 20/50 but I don't know if I already have too much milage on it considering the detergent aspect. Could it be an issue with that milage?