Shell Rotella T Syn 5W40 /4000mi/ 02 Subaru WRX

[JonR]

This is my first post, so take it easy on me!

-Shell Rotella T synthetic 5W40
-4000mi OCI
-2002 Subaru Impreza WRX with stock EJ205 2L turbo motor
-94,700 miles on motor
-OEM air and oil filters
-Amoco Ultimate 93
-Car is heavily modified
-Car has used methanol injection for 500 miles of this OCI
-I have used Torco octane booster for a few tanks of gas throughout this OCI which from what I've read explains the manganese value being high

This oil has been in the motor for over a year now because the car has been under the knife with modifications. During this OCI, it has seen probably 15-20 drag strip passes, 25-30 dyno runs, two turbo installs and a significant amount of other mechanical work. The makeup oil was only due to some lost oil during the turbo installs.

Is it likely that the higher iron/lead is due to the fact the oil has been in the motor for so long? How much of that can be caused my all of the mechanical work performed...or is that tough to tell with just one data point?

 

[SubLGT]

As I recall from some other UOAs here, Torco is responsible for some of the lead. The 1.0% fuel, and the track and dyno runs also contribute to the elevated lead and iron.

 

[Nederlander75]

FE is likely up due to the new turbos running in. Doent look bad considering

 

[Gary Allan]

My only comment is Dyson (google Terry Dyson or Dyson Labs). You're in another world with the stuff you're doing.

 

[JonR]

Originally Posted By: Gary Allan
My only comment is Dyson (google Terry Dyson or Dyson Labs). You're in another world with the stuff you're doing.


I'll take that advice and send it over to Terry.

 

[bluesubie]

Ok, so that's two turbo Subaru's.

I like Gary's comment that you're in another world with what you're doing.

FWIW, here's a uoa on a modified and tracked 2.0 running RL 5W40.

-Dennis

 

[SubLGT]

If you search here, you will find a modified Legacy GT running methanol injection. As I recall, his lead was low, but iron was elevated. M85 fuel can lead to elevated iron (do a google search), so it is not outrageous to propose that the methanol injection can also lead to increased iron (cylinder wear).

I also suggest you send your sample to Dyson.

 

[Last_Z]

Well, Auminum, chromium, copper, tin and nickel are either very low or excellent for this vehicle. The only tow elevated metals are iron and lead.
First, if this vehicle is as modified as you say it is, then the mixture is likely on the rich side to prevent detonation, which washes the oil film from the cylinders and the extra power has caused more stress on the engine. Couple that with the use of methanol and the Torco additive and a whole bunch of parameters add to the iron wear.

Lead can come from the same as above, especially the Torco additive.....notice the Barium, which is a fuel additive.

Overall, ok, given everything that happened during this OCI.

Rick

 

[bluesubie]

Originally Posted By: SubLGT
If you search here, you will find a modified Legacy GT running methanol injection. As I recall, his lead was low, but iron was elevated. M85 fuel can lead to elevated iron ...


Modified LGT running PP 5W40/10W30 mix.

-Dennis

 

[JonR]

Originally Posted By: bluesubie
Originally Posted By: SubLGT
If you search here, you will find a modified Legacy GT running methanol injection. As I recall, his lead was low, but iron was elevated. M85 fuel can lead to elevated iron ...


Modified LGT running PP 5W40/10W30 mix.

-Dennis


Thanks Dennis! That thread was very useful. Yeah I sent this to Terry and I'll be making a few changes to try to get the fuel dilution problem under control. Overall with all of the variables like installations, drag racing, turbo break-in, etc. I think things are looking okay and I'm hoping I will see lead and iron trend down from here.

 

[FZ1]

Ah,yes. Oil has been in the motor under very severe use for over 1 year,and,wonder of wonders! Relatively good Uoa. Look at that tbn! Top up that oil, boys.