Sorry if this was covered here before, but I found this TSB dated 2008 while looking for something else:
TSB-0134-08
Quote:
The 1ZZ-FE engine oil capacity and oil level gauge assembly (dipstick) has been updated for specific model year Celica, Corolla, and Matrix vehicles. Refer to the information below for the updated capacity and part number information
This applies to 2003-05 Corolla and Matrix.
I actually saw remarks about updated dipstick when I once found a Toyota document about oil consumption issue in 1ZZ-FE.
Thus, I think that Toyota decided oil levels should be higher than previously marked to avoid oil consumption. I actually have a mild problem with oil consumption and it started when I left oil level half way between empty and full once after oil change (after reading on priuschat that it improves MPG). There was also way more metallic debris than anytime else on magnetic oil drain during that OCI. I posted about it here with some pictures.
Now, it's clear that the half way level was below low on the new dipstick and that damaged the rings.
I'll either order new dipstick or mark new full level on old one (18 inches below the oil seal, or 10mm above the Full mark).
TSB-0134-08
Quote:
The 1ZZ-FE engine oil capacity and oil level gauge assembly (dipstick) has been updated for specific model year Celica, Corolla, and Matrix vehicles. Refer to the information below for the updated capacity and part number information
This applies to 2003-05 Corolla and Matrix.
I actually saw remarks about updated dipstick when I once found a Toyota document about oil consumption issue in 1ZZ-FE.
Thus, I think that Toyota decided oil levels should be higher than previously marked to avoid oil consumption. I actually have a mild problem with oil consumption and it started when I left oil level half way between empty and full once after oil change (after reading on priuschat that it improves MPG). There was also way more metallic debris than anytime else on magnetic oil drain during that OCI. I posted about it here with some pictures.
Now, it's clear that the half way level was below low on the new dipstick and that damaged the rings.
I'll either order new dipstick or mark new full level on old one (18 inches below the oil seal, or 10mm above the Full mark).