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International Automotive Technicians Network
Re: Mobil 1 Supercar Full Synthetic Motor Oil, 0W-40, Dexos R
Posted to Technical Discussion Forum on 3/26/2024

Hi Darell:

Opti 4 has been around for a while as has their guarantee

I used it on my Huskey yard tractor with a B/S in it from new when they sold it to me.

I used it for the first couple of years and then switched to B/S oil with the grade listed in the ... Login to read more.