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Two-Stroke Oil?

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Rowdy-Yates:
Hey all I was wondering what the Pros and cons of both castor based and synthetic two-stroke oils? I currently use Blendzall green label. I know when I was younger I used Belray MC-1. I was doing some research and was wondering if castor based was for the older steel cylinders? I have a plated cylinder and was wondering if I should switch to a synthetic. :P

hoopty:
I use Amsoil Pro 100 @ 100:1 and have no problems for the two years I've been using it. Before that I ran Maxima 927 Castor and every topend was early due to the rings sticking in the lands and the power valves getting all gummy. Not sure if that is all castor based oils or just Maxima though.

Timbowe:
The Ams 100 is sweet as! I've used it in one form or another for near on 20 years. At the mo tho I'm using thier 50:1 cause the local Ams importer went out of business and I scored three cartons of this 50;1 stuff. Then then a another outfit has taken over the importation and the 100 is available again. So once this 50 is used or onsold I'll be back into the 100 for sure.

Johnniespeed:
Thanks Rowdy for bringing this up, I could learn from others wisdom.  I really dont know that much about two stroke oils. On all my old old dirt bikes I used Golden Spectro, I never ever had a piston failure. On my KX500 the dealer told me to use something synthetic to keep the power valves clean. I have been using Klotz R-50 at 32:1 for over a year I have put 180 gallons of fuel through my bike, runs great and never fouled a plug. I have not had the topend apart yet but have been thinking about having a look inside.  I know I could mix it 50:1 but I run this engine real hard and feel the extra lubrication wont hurt as long as the plug stays clean.

hughes:
If you guy's would just use Yamaha's 2R and add Yamaha's Ring-Free you would not need to worry about all this stuff. Inspect your top end and then run a couple of tank's mixed with Yamaha 2R with ring free and then inspect again. I promise you good clean results. No Carbon.

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