Originally posted by Eddy<br />Kwak is another brain washed dummy but don't fault him too much because he has a lot of company. The WORSE oil you can use in your motorcyle is a alleged motorcycle oil none of which own a refinery and buy their oil from someome else.
The two best oils in the world are Amsoil oil and Mobil #1. PERIOD!
Nope on both paragraphs .
An Independent Oil Co such as Synergyn , Torco , Maxima ect builds better oils with much higher additive treat rate along with better suited viscosity index improvers . The Corporate bean counters are not in the way of things nor is the EPA and API in terms of max allowable percent by weight phoforus and zinc which are used in bike specific oils in larger amounts than todays car oils .
I'll not argue the point . Seen too much of that little bit of knowledge can do alot of harm on the net in the distant and not so distant past when it comes to oil topics .
Remember when looking below that boron , overbased magnesium , zinc and phosforus in higher amounts make a better bike oil . The more thats in the oil , the better the protection and I'm not even including base oil types and amounts used .
Current Castrol 10w-40 GTW is the same as their 20w-50
Here is plain Castrol GTX 10w-40 mineral oil
Vi 100c 14.1
Motul 3000 10w-40 mineral oil same as Kawachem 10w-40
Vi @ 100c 13.9
Now a few synthetics to include Amsoils latest [|)]@ 9 bucks a quart
Vi 100c 13.9
Mobil 10w-40 bike oil
Vi 100c 13.8
Mobil Extended Performane 15w-50 car oil at 5 bucks a quart
VI @ 100c 18.0
Maxima Extra 4 10w-40 @ 7 bucks per
Vi 100c 12.5
John Deer 0w-40 Syn Blend made by Chevron just for grins
VI @ 100C 14.92
I don't have time or want to go into the base oils used but this should give an example of how some oils are built better than others when it come to bike oils AND show proof small companies can and do make superior products and big giant Mobil can build oils at lower price than it's competitors do to shear volume and in house additive developement . Mobil sells their base oils to Amsoil because Amsoil does NOT have a refinery like you allow
in the quote .
Boosted , all those oils you copied and pasted are fom almost a decade back . Much has changed since . Even the J300 viscosity chart is under scrutiny for change .