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SU Oil weight

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SU Oil weight

what weight of oil is recommended for the SU carbs in my BT7? I live in a moderate climate and drive year round. I've heard a gamut from lightweight to 90 wt.

SU oil weight

Depends on the temperature outside. If it's the middle of summer, the correct oil would be the same weight as the engine oil. But if it's 10 degrees F outside, then use a very light oil....WD40, sewing machine oil, 5W oil that is not as thick as molasses so the piston can move up and down. You can use the oil sold by either Moss Motors or Victoria British sold as carb oil or just use the right oil for the temperature outside.