I am currently using 10W-30 Castrol GTX oil in my 190e 2.6. The temperature I'll be mostly dealing with is around 15-30 degrees or lows of about 4-8 degrees. Is this grade of oil the right choice for these temperatures? I ask this because I am coming up on a oil change.


Thx

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190e 2.6 1990. 300,000 KM
C230 K 2000, 130,000 KM