is 5000 miles too long to wait for an oil change?

[33OH]

I run AMSOIL synthetic, change the oil every 25K miles. Change the filter every 10K miles.

[ctrj]

Originally Posted by 33OH

I run AMSOIL synthetic, change the oil every 25K miles. Change the filter every 10K miles.

[Billiam]

[Quaifer]

Originally Posted by 33OH

I run AMSOIL synthetic, change the oil every 25K miles. Change the filter every 10K miles.

You are crazy man. Not only is that way too long, AMSOIL is not a very good synthetic to begin with.


My yaris is at 65,000km (40,389miles). I was using Castrol 5w30 conventional but switched to Mobil 1 5w30 Full Synthetic on my last oil change. I am choosing to go 8,000km (5000miles), using a Fram Tough Guard filter on my first oil change.

The first thing I noticed when I switched to Synthetic was my engine ran a little quieter. Second was just performance, it seemed to accelerate a bit quicker and smoother. I know the filter says it's good for 12,700km (7500miles) but I don't feel comfortable going that kind of distance. I do a lot of highway driving going back and forth to work so I will find out in a month how the oil works out.

[Astroman]

Ok, amsoil states using their filters you CAN go that long, and it is excellent oil. Lets keep this as facts not speculation please. This is why oil threads go south

[1stToyota]

Originally Posted by Astroman

Ok, amsoil states using their filters you CAN go that long, and it is excellent oil. Lets keep this as facts not speculation please. This is why oil threads go south

I think Amsoil issued a warning that their ea filter [made by WIX] in our Yaris needs to be changed every 5k miles, even though it's rated by Amsoil for about 25k miles....so yeah, I guess if you're instructed by Amsoil to change their 25k mile filter every 5k miles their oil will easily last the claimed 25k miles/1yr.

[HTM Yaris]

I find it interesting that Toyota will be switching to 10,000 mile oil change intervals . I'm willing to bet they will be using Amsoil or made by Amsoil .

If you do a comparison with Amsoil and Mobil1 like I did , you will come to the same conclusion that I did . At 5000 miles the Mobil1 was "black" while the Amsoil was still somewhat lucent . Visual inspection alone clearly (pun intended) shows that Amsoil is a superior product .

I change filter at 5K (Toyota) and my Amsoil at 10K .

[1stToyota]

Originally Posted by HTM Yaris

I find it interesting that Toyota will be switching to 10,000 mile oil change intervals . I'm willing to bet they will be using Amsoil or made by Amsoil .

If you do a comparison with Amsoil and Mobil1 like I did , you will come to the same conclusion that I did . At 5000 miles the Mobil1 was "black" while the Amsoil was still somewhat lucent . Visual inspection alone clearly (pun intended) shows that Amsoil is a superior product .

I change filter at 5K (Toyota) and my Amsoil at 10K .

I doubt that Toyota will be using an oil that doesn't even have their own base stock...Amsoil just adds their additive package to their competition's [Mobil] base stock.

Some people like seeing black oil because they claim it means that the oil has enough detergents to clean the motor better. Maybe it's just urban legend that my grandfather helped to get started. Personally, I don't like seeing the oil go completely black at 5k in a well maintained low mileage Yaris, but that's what happened when I also drained the M1 (0w30) out on a 5k mile OCI ...first time that's ever happened, and I've used Eneos, PP, HP Amsoil, etc...