'05 Chevrolet Optra (Suzuki Forenza), ZF 4HP16

[MarioT]

Factory Fill, Esso LT71141 30kmiles.

Blackstone comment: "For having seen 52,000 km of use this oil looks pretty good. Aluminum was the only wear metal out of line, which shows a little excess wear at the torque converter."

ALUMINUM 36
CHROMIUM 1
IRON 107
COPPER 53
LEAD 10
TIN 4
MOLYBDENUM 1
NICKEL 1
MANGANESE 4
SILVER 0
TITANIUM 0
POTASSIUM 11
BORON 97
SILICON 10
SODIUM 9
CALCIUM 500
MAGNESIUM 4
PHOSPHORUS 378
ZINC 26
BARIUM 5

SUS Viscosity @ 210°F 46.6
cSt Viscosity @ 100°C 6.22
Flashpoint in °F 395
Fuel % -
Antifreeze % -
Water % 0.0
Insolubles % 0.0

 

[firemachine69]

Factory fill?!?!?!?

 

[MysticGold04]

I believe the Esso stuff is synthetic.. at least that's what I was told... I had an 06 Forenza and dumped it for something bigger. It was a good car, but I worried about the Auto Trans in that thing.. no dipstick. Only drain/fill bolts, so checking the level was quite difficult.

 

[IndyIan]

Originally Posted By: firemachine69
Factory fill?!?!?!?

Remember its a transmission. Or are you being saracastic, surprised that anyone here uses the original oil for more than 12km?

 

[MarioT]

Also keep in mind that GM specs this fluid as "Lifetime" ATF. They recommend changing at 60kmiles only on the severe service schedule.

I wanted to play on the safe side and do a partial replace at 50%. Seems I could go a little further next time, but GM sells the fluid cheap at 7$/L