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Patrick L. · 05-29-2013, 05:08 PM

It looks to me from the chart that ISO 680 is 190 wgt and ISO 460 is 140 wgt. [or should I say viscosity]. I've used 140 and 250 and really don't see much difference between the 2. I've also used 90 and prefer the heavier, but, I believe any would be fine. The only oil I couldn't use was the Lucas, it turned to foam and became un-shiftable.

05-29-2013, 05:08 PM	#8
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: 600w............enough is enough! It looks to me from the chart that ISO 680 is 190 wgt and ISO 460 is 140 wgt. [or should I say viscosity]. I've used 140 and 250 and really don't see much difference between the 2. I've also used 90 and prefer the heavier, but, I believe any would be fine. The only oil I couldn't use was the Lucas, it turned to foam and became un-shiftable.