Vintage Dirt Bike Q & A

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 Post subject: DT MX FUEL pre mix ???
PostPosted: Thu Jun 14, 2007 1:04 pm 
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Joined: Thu Jun 14, 2007 12:45 pm
Posts: 4
hi just got me a dt mx 175 ,1979 full bike well near side panal missing, the guy said 2 stroke pump is naff??is it ok to run on pre mix if so whats best 20/1 25/1 30/1 ECT cool bike 4 1979. 8)


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PostPosted: Thu Jun 14, 2007 3:25 pm 
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Joined: Fri Jun 01, 2007 1:06 pm
Posts: 2
Location: Kansas, USA
My '81 YZ465 calls for 32:1 premix with premium gas (90+ octane). I use 40:1 Golden Spectro with no problems. Modern synthetic 2-stroke oils have better lubricity than the old oils, so higher ratios are usually okay.

Bill


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PostPosted: Mon Jun 25, 2007 6:52 am 
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Joined: Wed May 18, 2005 10:55 am
Posts: 50
Location: College Park, MD
I use Golden Spectro at 50:1 in everything (1 small bottle to 5gals of premium pump gas) I have. CZ 125/250/400, Bul 350T, Rickman Zundapp 125, Montesa 250 King Scorpion. Always have great wear resistance and rarely/never have spark plug fouling.

From my experience it is best to run the oil manufacturers reccomended ratios as most vintage stuff only had prehistoric oils to draw from.

OriginalDirt

_________________
74 AMPI CZ125
73 CZ400
73 CZ250 Basket case.
72 SherpaT 350
75 Montesa King Scorpion
72 Rickman 125 Enduro
70 Honda CL70
72 Honda Z50
00 DRZ400E Baja'd


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