Skip the auto shop - Our mechanics make house calls

Q: Thinking about switching to synthetic oil.

asked by on

I have a 1997 jeep grand Cherokee 4.0L I6 and it sometimes has trouble starting in the winter. I'm thinking about switching to synthetic oil so that it flows through the engine better in hopes that it will help my problem. Even if it doesn't help that problem I know that synthetic oil is better for engine life then conventional oil. My main concern is that I'm not sure if it's safe to switch from convention oil to synthetic oil since the vehicle has been running on conventional oil for 20 years now. I would appreciate your thoughts on my issue, thank you.

My car has 181000 miles.
My car has an automatic transmission.

A: I would recommend using a simi-synthetic hi...

I would recommend using a simi-synthetic high mileage oil rather than straight synthetic. High mileage oils are designed to reduce friction and have extra additives embedded that assist in removing unwanted deposits. As far as the reason your engine struggles to start in the winter, I would first work through the three main starting problems. Battery, alternator, and starter. If you cannot perform this diagnosis yourself, I would enlist the assistance of a qualified mechanic.

Was this answer helpful?
Recommended services
Get a Quote

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Could an oil leak turn into a transmission problem?

Hi there. What seemed to happen is that the spark plug well was full of engine oil and when you removed the spark plugs, the oil got into the cylinders. Now, if the rings were sealing very well, the oil...

Q: Car won't start - 2013 Dodge Charger

Hi there. Fuel pressure would be a good thing to check out as lack of fuel pressure would indicate a failed fuel pump. Other things that may cause the vehicle to stall are a camshaft or crankshaft position sensor and...

Q: Car stalling at random, could be an electrical problem?

Generally, when the car is running consistently and on all cylinders, when stalling it is often times a fuel supply issue (or in some cases indirectly related to electrical - i.e. bad connection or pulse to the fuel injectors). I...

Related articles

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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.