Oil Mix Ratio for A 1978 SRX

Blisteringsnorider

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This has probably been asked a thousand times.......but what is a good oil mix ratio for a 1978 SRX ? I know the tank tag says 20:1 but running Amsoil Dominator oil. With this type of oil I should be able to run a higher ratio correct ? Some guys say run a 4% others say 3% percentage of oil to gas. 20:1 is 5% Just don't want to burn the old girl down. Thanks in advance
 

Yamaha had just as good of oil back then. Yamalube R.

IMO, The people that sold the motor with a warranty made the 20:1 sticker. Good enough
 
She sure pukes a lot of oil out of the pipe and smokes pretty good.....20:1 may be a bit to much oil I'm thinkin
May thin it down to 32:1 that would be 3.13% oil

32:1 worked great with Amsoil Dominator and Aviation gas
 
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