1941 miles, 29 month run on Amsoil 0w-30 SS in my 1GR-FE

[zfasts03]

Here is the UOA from my 2018 Toyota 4Runner with 1941 mile on the oil with a 29 month run. Vehicle has 5600 miles on the clock, this is rarely driven, but brought up to operating temp when used. Vehicle is stored outside, sometimes covered, sometimes in a car port.

Was changed due to time, not mileage.

Surprised to see copper high, but I guess it is still breaking in and washing out. This was the 4th oil change for this vehicle.
Oil filter TRD Pro PTR4300079.

 

[Rand]

so this oil change started at 3600 miles, I'd suspect the same reason for copper.

 

[Patrick0525]

Out of curiosity, is this original factory Toyota pink coolant?

 

[fantastic]

Agree with your assessment on the Cu. Looks good overall & should come down.

 

[twX]

I'd keep an eye on the tin. VOAs of this oil don't show any tin in the additive package.

Copper and tin in that kind of ratio can be an indication of wear from bronze parts. Otherwise, the tin could be from the rod or main bearings, and the copper could be from the oil cooler.

This is the second UOA I've seen recently with high copper/tin. In both cases, the oil used was not API approved and thus not subject to the Sequence VIII corrosive wear test for bronze bearings.

Does anybody know if this engine even contains any bronze parts?

 

[zfasts03]

Out of curiosity, is this original factory Toyota pink coolant?

yes, pink coolant, original, will probably freshen at the 10 year mark.

 

[zfasts03]

so this oil change started at 3600 miles, I'd suspect the same reason for copper.

yep, 3600 miles to 5600 miles for this report.

I planned on a 2 year run, but life got busy. So it turned out to be a 2.5 run.

 

[Oliveoil2]

Well, one thing is clear…you will never wear-out this engine.

 

[zfasts03]

I wonder if this long (time) run contributed to possibly copper corrosion?

 

[zfasts03]

Well, one thing is clear…you will never wear-out this engine.

Once my 97 Ram goes to the boneyard due to rust, the 4Runner will become my main driver.

Still probably never wear it out.

 

[Artem]

It will rot out from age before actually wearing out from use.