I change my own oil/filter on each of my two cars twice a year, and I was thinking of moving to once a year. Each car gets driven about 2000-5000 miles per year, and gets a new PCV valve every few years (none have every been at all clogged though).
I have a 1998 Toyota Avalon with just over 200,000 miles on a 1mzfe engine that never consumes a drop of oil. I have religiously changed the oil every 3000 miles/6 months for the last decade or so (except last OCI at 5000/4months). The Avalon has been getting Maxlife Blend 5w30 for most of that time. It was dealer serviced before I got it, and in very good condition.
I'm now running a Fram XG3600 Oversized Filter and the new 5w30 Pennzoil Platinum Full Synthetic High Mileage oil. I don't think the PP Synthetic High Mileage oil has been out for long. I got it cheap ($22 5 qt) at Wallyworld. That car has never had full synthetic, but it doesn't leak anywhere and it is clean as a whistle under the valve cover. It doesn't consume a drop of oil between oil changes. I was thinking of extending my OCI to 12 months/5000 miles.
I also have a 1999 Toyota Corolla with 150,000 miles that has a similar history. It mostly has gotten the 5w30 Maxlife blend for years on a 6month/3000 mile OCI. I'm thinking of also going to the PP Full Synthetic High Mileage with a 12month/5000 mile OCI for it. It also does not consume any oil (oddly enough for that engine) and is also clean under the valve cover. It now has a Fram XG3600 Oversized Filter. It has never run full synthetic. It has the Maxlife in it now.
Am I crazy for changing to a longer OCI with Synthetic High Mileage for cars that have been doing just fine on the Maxlife Blend at the short OCI? I am just getting older and busier and want to cut that labor in half. I was thinking of just using PP High Mileage (or maybe Mobil 1 High Mileage) on the longer 12 mo/ 5000 mi OCI for the remainder of the lives of these cars.
I have a 1998 Toyota Avalon with just over 200,000 miles on a 1mzfe engine that never consumes a drop of oil. I have religiously changed the oil every 3000 miles/6 months for the last decade or so (except last OCI at 5000/4months). The Avalon has been getting Maxlife Blend 5w30 for most of that time. It was dealer serviced before I got it, and in very good condition.
I'm now running a Fram XG3600 Oversized Filter and the new 5w30 Pennzoil Platinum Full Synthetic High Mileage oil. I don't think the PP Synthetic High Mileage oil has been out for long. I got it cheap ($22 5 qt) at Wallyworld. That car has never had full synthetic, but it doesn't leak anywhere and it is clean as a whistle under the valve cover. It doesn't consume a drop of oil between oil changes. I was thinking of extending my OCI to 12 months/5000 miles.
I also have a 1999 Toyota Corolla with 150,000 miles that has a similar history. It mostly has gotten the 5w30 Maxlife blend for years on a 6month/3000 mile OCI. I'm thinking of also going to the PP Full Synthetic High Mileage with a 12month/5000 mile OCI for it. It also does not consume any oil (oddly enough for that engine) and is also clean under the valve cover. It now has a Fram XG3600 Oversized Filter. It has never run full synthetic. It has the Maxlife in it now.
Am I crazy for changing to a longer OCI with Synthetic High Mileage for cars that have been doing just fine on the Maxlife Blend at the short OCI? I am just getting older and busier and want to cut that labor in half. I was thinking of just using PP High Mileage (or maybe Mobil 1 High Mileage) on the longer 12 mo/ 5000 mi OCI for the remainder of the lives of these cars.
