I've been using Castrol Syntec 10w-40 for the last few oil changes & it
seems to be working well, but how do you really know ? I am aware this
is not a full synthetic oil but a blend. My reason for spending the
extra money is in the hope of the advertised benefits such as better
lubrication at start ups & superior viscosity control under extreme
conditions is true. I change the oil every 2,500 miles any way so
there's I don't take advantage of the extended oil change interval. I
would use Mobil 1 but it's not available in the 10w-40.
I have used Castrol regular oil in the past & it worked fine but I
always notices slightly lower oil pressure & more valve noise. The
Syntec doesn't seem to do that.
--
Mitch Seff
Oceanside, N.Y.
75 TR6SC
http://www.triumphowners.com/384
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