Piston Slap: Fuelish Thought on Additives?

(www.arthursclipart.org)

Robin writes:

Sajeev,

Longtime reader, first time writer. I love reading your stuff, well worthwhile.

My query is about fuel additives, after-market specifically. I have used the Lucas Oil products and found them to produce a mile or two better MPG in my 94 D21 four banger. (Note: that’s a Nissan Hardbody – SM)

What is your take on additives? Have you found any others to be of significant value to the user/user’s vehicle?

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