Hey guys- I've got a customer with the above mentioned Terrain with the 2.4 Ecotec which has direct injection. Long story short, I pulled the drain plug to check for water/coolant and found that the oil had a fair bit of fuel in it.
I looked on the computer for the last time I changed it and found it only had 4600 miles on it. I got authorization to change the oil, but instead of putting in a more expensive Dexos spec'ed oil and running by the OLM (my usual routine with this customer), I elected to put in Chevron Supreme 5w30 (synblend) and cut the OCI back to 3500 miles. Does this sound like an appropriate course of action?
I looked on the computer for the last time I changed it and found it only had 4600 miles on it. I got authorization to change the oil, but instead of putting in a more expensive Dexos spec'ed oil and running by the OLM (my usual routine with this customer), I elected to put in Chevron Supreme 5w30 (synblend) and cut the OCI back to 3500 miles. Does this sound like an appropriate course of action?