Different types of motor oil ?

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Originally Posted by Biggd

I always recomended to my customers to change their oil evry 5000 miles, even Mobil 1. I'm sure it will go much longer but it still gets dirty, esp if your car is not running properly. I've always changed the Mobil 1 oil on my cars and trucks every 5000 miles.

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Total waste of money and resources.

Get your oil professionally tested to see how long you can safely go. They will test everything. How well the additives (which are critical) are holding up. How much gasoline is in the oil, the viscosity etc.

Not blindly guessing that 5000 miles is the magic distance for every vehicle and customer.

Newer cars don't run nearly as dirty as they used to. Better oils can "suspend" contaminates better. Better oil filters filter more junk out.

If you are gonna change it at 5000 miles, don't waste your money on synthetic.
Non synthetic oils have improved too.

Time is important too. If you don't drive a lot you might be building up to much water (from condensation) in the oil and not burning it off.

Here is where I've had my oil tested numerous times. I'll do like the first 5 oil changes. Then every 100K after that.

https://www.blackstone-labs.com

If you want to learn about oils this is the play to go.

https://bobistheoilguy.com/forums/