Mineral oil in diesel ratio

[baba2000]

Hi wondered what ratio is right using mineral oil in diesel. I'm using 40 to1 that's 40 ltr diesel to 1ltr mineral oil. Engine 2.5di Its never run better but wondered if I'm overdoing it. Thanks.

[gotgcoalman]

Normally it's a glug to £20 worth of diesel.

Full tank =a slurp.

Don't think you can over do it

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[baba2000]

Thanks.