I had always heard by my father a long time ago to stay with the same kind of oils instead of going back and forth, especially in the transmissions.
I run a local landscaping business and we just bought a fleet of high mileage trucks. (5) trucks to be exact. we are expanding our business this year and adding several crews and couldn't afford to do the expansion and equip every crew with a brand new truck, trailer, and new equipment. So we went the cheap route.
All the trucks are very high mileage, two have 400,000+ miles, two have 300,000+ miles, and one with 250,000 miles. They are all 2500 Gasoline trucks in the heavy duty chassis. The trucks are solid, run strong, no leaks with the exception of one with a minor oil pan gasket. And all of them have had recent 4l80 transmission rebuilds and complete front end rebuilds.
Long story short, I've always been a Valvoline or Mobile 1 man. The previous owner said he NEVER ran anything, but regular pensoil, $14. / 5 quart in every truck and suggested I stick to the same oil, every 3k miles.
Would it be a risk switching to my normal oil that I buy in bulk (Max Life) and (Mobile High Mileage) or should I stick with the much cheaper Pensoil. The Pensoil cost nearly half the price and it's obvious that it's been working.
I guess I should also mention we are partial to 3-4k mile oil change intervals. We prefer not to do any more being that we tow daily and tend to be rough on the engines.
I run a local landscaping business and we just bought a fleet of high mileage trucks. (5) trucks to be exact. we are expanding our business this year and adding several crews and couldn't afford to do the expansion and equip every crew with a brand new truck, trailer, and new equipment. So we went the cheap route.
All the trucks are very high mileage, two have 400,000+ miles, two have 300,000+ miles, and one with 250,000 miles. They are all 2500 Gasoline trucks in the heavy duty chassis. The trucks are solid, run strong, no leaks with the exception of one with a minor oil pan gasket. And all of them have had recent 4l80 transmission rebuilds and complete front end rebuilds.
Long story short, I've always been a Valvoline or Mobile 1 man. The previous owner said he NEVER ran anything, but regular pensoil, $14. / 5 quart in every truck and suggested I stick to the same oil, every 3k miles.
Would it be a risk switching to my normal oil that I buy in bulk (Max Life) and (Mobile High Mileage) or should I stick with the much cheaper Pensoil. The Pensoil cost nearly half the price and it's obvious that it's been working.
I guess I should also mention we are partial to 3-4k mile oil change intervals. We prefer not to do any more being that we tow daily and tend to be rough on the engines.
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