I have about 7 to 8 quarts of Valvoline SYNPower 20w-50 full synthetic that I got on clearance about 5 years ago.
I mainly use it for my older lawnmower and it's been great. However I just don't need that much of it and there happens to be another oil I have about 20 quarts of that's also languishing.
I got Shell Rotella Gas & Truck Full Synthetic for free back in 2020 after the rebates. I'm using everything except the 0W-20 which has been mostly sitting around.
I'm thinking about combining roughly 1 quart of the Valvoline 20W-50 with 4 quarts of the Rotella 0W-20. This would make it a 5W-26 from my armchair calculations and I'm planning on keeping the OCI at 5k.
I know I won't blow anything up. I own a dealership but this will be for my personal use over the next several years. That guy who likes to perfect everything before retailing his daily drivers? That's me. I estimate that four to five oil changes will bring these two weights down to managable levels so that I can do top-offs with 0W-20 vehicles and regular OCI on the lawnmower with the 20W-50 until the year 2030.
I mainly use it for my older lawnmower and it's been great. However I just don't need that much of it and there happens to be another oil I have about 20 quarts of that's also languishing.
I got Shell Rotella Gas & Truck Full Synthetic for free back in 2020 after the rebates. I'm using everything except the 0W-20 which has been mostly sitting around.
I'm thinking about combining roughly 1 quart of the Valvoline 20W-50 with 4 quarts of the Rotella 0W-20. This would make it a 5W-26 from my armchair calculations and I'm planning on keeping the OCI at 5k.
I know I won't blow anything up. I own a dealership but this will be for my personal use over the next several years. That guy who likes to perfect everything before retailing his daily drivers? That's me. I estimate that four to five oil changes will bring these two weights down to managable levels so that I can do top-offs with 0W-20 vehicles and regular OCI on the lawnmower with the 20W-50 until the year 2030.