Stromberg carbs oil help - Defender Source
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  #1  
Old January 16th, 2016, 01:37 PM
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I need to top up my Zenith stromberg carbs with fluids (they're pretty dry) as I have not really ever done that. Anyways, some people recommended I use ATF but the automatic transmission fluid I have is castrol transmax DEX/MERC ATF. Is this fine or should I use the sae10w-40 motor oil I have lying around. Thanks
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Old January 16th, 2016, 02:21 PM
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20w I do believe, that's what I have always used in my old su's
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Old January 16th, 2016, 03:00 PM
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ATF for winter & 20W for summer. If you use the ATF for summer it'll "thin out" too much and vice versa.
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Old January 16th, 2016, 03:08 PM
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Quote:
Originally Posted by Departing90 View Post
ATF for winter & 20W for summer. If you use the ATF for summer it'll "thin out" too much and vice versa.
Then why not use a multi weight like a 0W20?
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Old January 16th, 2016, 04:21 PM
Departing90
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Quote:
Originally Posted by Red90 View Post
Then why not use a multi weight like a 0W20?
Because even the "0" in 0/20 is not as thin as ATF if your engine runs good with ATF I suspect due to inevitable tolerances in carbs.

That aside marvel mystery oil is better than both for that application! It has the correct consistency and will keep the carbs clean & clean out your valves to boot! Additionally and more importantly its not affected by temp changes!
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