Q: So I found out mt husband used castrol high mileage 5-w30 oil on my gmc terrain sle 2013 and im panicking. Is that oil okay?

asked by on

I'm just worried about the type of oil.. Im not sure if it's okay for my vehicle. They gave him the oil at the auto parts store and I just want to know if it is okay or if I need to change it again.

My car has 41000 miles.
My car has an automatic transmission.

The high mileage oil brand, and the specific viscosity rating (5W-30), that your husband bought for you is perfectly acceptable and you needn’t worry at all. High mileage oil simply claims to have "extra" engine oil seal conditioners and perhaps added detergent, in comparison to "regular" oil, but you needn’t worry as these extra "additives" will NOT have any deleterious effect whatsoever in your engine. As to whether so-called high mileage oils render any benefits, though, I am not aware of any peer reviewed, published scientific papers proving a benefit from high mileage oils. Again, such oils will NOT harm your engine but a closely related question is simply, "is there a benefit, particularly in view of the fact that the price of the "high mileage" oil is higher than regular oil?". Until publication of such proof appears, from the standpoint of the public these so-called "high mileage" oils are a waste of money. If you have further questions or concerns, do not hesitate to re-contact YourMechanic because we want you to make the most of your repair dollars and help you to get the best possible results at the lowest possible cost.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. So I found out mt husband used castrol high mileage 5-w30 oil on my gmc terrain sle 2013 and im panicking. Is that oil okay?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Service park assist is displaying on dash

Hello, and thank you for writing in. Your vehicle is equipped with the Park Assist feature which will help you park in difficult situations. When the computer system detects there is an issue, the warning light illuminates to let you...

Q: Jeep Compass slow turn bogging down issue, TC/ABS/ESP/4WD.

Hi There, What you are describing sounds like it may be related to a faulty transmission control module or potentially a bad transmission speed sensor. The speed sensor reads the rotational speed of the reluctor wheel, located within the transmission....

Q: Car temp gauge is saying overheating , idle engine

Hi there. I don't think that the V-Power gas has anything to do with your overheating issue. You indicated that when you turn the car off, you hear a sound as if the car is still running. That is most...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...