4WD
$50 site donor 2024
Anyone in search of thickener in a 20 vis could use SAE30 SN Plus … I bought that for $3/quart …No, STP only thickens at the expense of additives. If you want a higher viscosity then buy a higher viscosity fully formulated motor oil. The suggestion to use a 30-grade is the correct one.
OP: instead of certain brands … find an inexpensive 5w30 that meets Dexos … all that motor needs