Castrol 0w-30, 3797 miles, '01 Saab 9-5

[bfg9k]

Analysis done by Blackstone Labs. My commute is 12 miles each way, 90% highway at 65-70 mph. I have settled on a 2x/year oil change, when I switch from summer to winter tires and vice versa. Due to the known sludge issues with this engine (2.3L LPT), I'm not going to pursue long OCI's. The Saab is the base model wagon, auto, with 67300 miles on it.

Results...1st column is this car, 2nd is universal avg. at 5120 miles:
Code:

---

aluminum 2 3

chromium 1 1

iron 12 22

copper 5 5

lead 3 6

tin 0 1

moly 25 47

nickel 0 0

mang 0 1

silver 0 0

titanium 0 0

potassium 0 1

boron 31 36

silicon 5 8

sodium 4 20

calcium 2012 2100

magnesium 324 300

phosph 772 871

zinc 863 1014

barium 0 7

---

It looks like the easy-to-find GC 0w-30 is a winner in this engine (that's what's in it again) but I may try the Redline 5w30 in the spring just for kicks. Cheers!

 

[bfg9k]

Oops, I forgot to add:
SUS Viscosity: 64.8
Flashpoint: 375
Fuel: 0.5% (engine not completely warmed when drained)
antifreeze: 0%
water: 0%
insolubles: 0.2%

 

[BrianWC]

Looking good! I walked to the counter at Autozone last week with 5 qts of GC....Then I thought about the 262 qts of oil I already have and the 3rd kid on the way...

 

[shanneba]

Once you get all the moly flushed out GC will probably do even better!