- Oct 19, 2000
- 17,860
- 4
- 81
I've had my oil changed by the same dealership for a long time now, for the whole 3 years I've had my car. My car has about 109,000 miles on it, and from the paperwork they give me, they put in 10W30 Valvoline. Well, I've not had the money to get an oil change lately, and need another quart in my car. Well, I bought some Valvoline 10W30 motor oil, and when I got under the hood to check and fill my oil, the cap for the oil reserve says 5W30 oil. Has it been ok for the dealership to have been putting 10W30 in my car, or is the cap just a suggestion as to what to use?