Here are the results of the second UOA from my 2004 Mazda 6i. No track time during this interval
but still plenty of my usual, spirited driving
.
2004 Mazda 6i, 2.3 ltr 16v, auto trans
11,233 miles on engine, 4,990 miles on sample
4.5 qt. sump, zero make up oil
Havoline 5w-20 SL, GF3
OE Mazda Cartridge filter
Analysis performed by Blackstone Labs
this sample / 1st UOA / univers avgs
(first UOA was 3,243 mile interval)
aluminum 3/3/4
chromium 1/1/1
iron 8/8/12
copper 3/5/8
lead 1/1/1
moly 165/146/75
tin 0/0/0
nickel 0/0/0
manganese 1/1/1
silver 0/0/0
titaniun 0/0/0
potassium 0/0/0
boron 32/49/77
silicon 7/9/10
sodium 2/2/5
calcium 2073/1920/2568
magnesium 27/29/67
phosphorus 741/702/752
zinc 860/843/888
barium 0/0/0
this sample/1st uoa
sus vis @210 51.9/50.8
flashpoint 395f/385f
fuel anti-freeze 0/0
water 0/0
insols 0.4/0.2
TBN = 2.4/3.6
Numbers looking good to me. Once again I'm happy with the performance of this inexpensive, 5w-20 Havoline dino. It seems to do well in this engine and under my conditions/driving habits. I must say I'm especially impressed with how well the TBN held up after almost 5,000 miles. Vis remained a solid 20w
. I'm looking forward to seeing how the new GF4 spec version does. I still have one oil change to go with the SL-GF3 before I start on the fresh case of GF4 Havoline.
Comments welcome and appreciated.
[ November 10, 2004, 12:05 AM: Message edited by: mikep ]


2004 Mazda 6i, 2.3 ltr 16v, auto trans
11,233 miles on engine, 4,990 miles on sample
4.5 qt. sump, zero make up oil
Havoline 5w-20 SL, GF3
OE Mazda Cartridge filter
Analysis performed by Blackstone Labs
this sample / 1st UOA / univers avgs
(first UOA was 3,243 mile interval)
aluminum 3/3/4
chromium 1/1/1
iron 8/8/12
copper 3/5/8
lead 1/1/1
moly 165/146/75
tin 0/0/0
nickel 0/0/0
manganese 1/1/1
silver 0/0/0
titaniun 0/0/0
potassium 0/0/0
boron 32/49/77
silicon 7/9/10
sodium 2/2/5
calcium 2073/1920/2568
magnesium 27/29/67
phosphorus 741/702/752
zinc 860/843/888
barium 0/0/0
this sample/1st uoa
sus vis @210 51.9/50.8
flashpoint 395f/385f
fuel anti-freeze 0/0
water 0/0
insols 0.4/0.2
TBN = 2.4/3.6
Numbers looking good to me. Once again I'm happy with the performance of this inexpensive, 5w-20 Havoline dino. It seems to do well in this engine and under my conditions/driving habits. I must say I'm especially impressed with how well the TBN held up after almost 5,000 miles. Vis remained a solid 20w

Comments welcome and appreciated.
[ November 10, 2004, 12:05 AM: Message edited by: mikep ]