The table shows all suitable motor oils for Cts 1st generation, made in 2002 — 2007.
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Year
Grade SAE
all-season +25 to -25 °C
winter -30 to +5 °C
summer -5 to +45 °C
Gasoline API
Diesel API
Oil Type
Recommended Brand
2002
10W-30 10W-40
5W-30 5W-40
20W-40 25W-30
SM SL
CH-4
semisynthetics, mineral
Valvoline, Kixx, Exxon, Ecopower
2003
10W-30 10W-40 15W-40 15W-30
5W-30 5W-40
20W-40 25W-30
SM
CI-4
semisynthetics, mineral
Mobil, Pentosin, Lucas Oil, Valvoline, Mannol
2004
10W-30 15W-40 15W-30
5W-30 5W-40
20W-40 25W-30 25W-40
SM
CI-4+ CI-4
semisynthetics, mineral
Valucraft, Pentosin, Lucas Oil, Valvoline, Kixx
2005
10W-40 15W-40 15W-30
5W-30 5W-40
20W-40 20W-30 25W-40
SM
CJ-4 CI-4+
semisynthetics, mineral
Pentosin, Lucas Oil, Valvoline, Select, Kixx, Exxon, Mannol, Chevron
2006
10W-30 10W-40 15W-40 15W-30
5W-30 5W-40
20W-40 20W-30 25W-30 25W-40
SM
CI-4+ CI-4
semisynthetics, mineral
Mobil, Select, Mannol, Lliqui-Moly, Chevron
2007
10W-30 10W-40 15W-40 15W-30
5W-30 5W-40
20W-40 20W-30 25W-30 25W-40
SM
CJ-4 CI-4+
semisynthetics, mineral
Mobil, Select, Mannol, Chevron
Data close to recommended in Cadillac
To buy the right oil you need to know SAE Viscosity Grade and API Quality Index oil for diesel or gasoline engine. You can select any Brand from the listed.
Example: for gasoline engines Cadillac Cts (1st generation) 2002, suitable multigrade semisynthetics oil 10W-30 quality SM.
For bodies made in 2007, for the cold season, well suited semisynthetics 5W-30 \ SM.
If possible, check the selected oil for compliance with the manufacturers specifications and service intervals.