I recently purchased lots of Castrol Edge High Mileage 10w-40 at the recent Autozone clearance. ($2/quart)
I also have in stash some Castrol Magnatec 5w-20 from another store's "rollback".
For my 2007 Volvo V70, the owner's manual calls for 5w-40 when temps exceed 86 degrees F, so the 10w-40 Edge should be good for my Texas Summers.
For my Texas "Winters" I'm going to run 3.5 quarts of the 10w-40 Edge mixed with 2.5 quarts of the 5w-20 Magnatec. In my estimation this should give me about 12cSt at 100 degrees Celsius, or essentially an "8w-30" oil. I'll go with a 7500 mile maximum OCI.
Thoughts or concerns on this Castrol cocktail?
I also have in stash some Castrol Magnatec 5w-20 from another store's "rollback".
For my 2007 Volvo V70, the owner's manual calls for 5w-40 when temps exceed 86 degrees F, so the 10w-40 Edge should be good for my Texas Summers.
For my Texas "Winters" I'm going to run 3.5 quarts of the 10w-40 Edge mixed with 2.5 quarts of the 5w-20 Magnatec. In my estimation this should give me about 12cSt at 100 degrees Celsius, or essentially an "8w-30" oil. I'll go with a 7500 mile maximum OCI.
Thoughts or concerns on this Castrol cocktail?