Skip the auto shop - Our mechanics make house calls

Q: Conventional oil vs. synthetic oil?

asked by on

I have a 99 silverado 1500 4.8l with 85000 miles, can I switch or is it safe to switch to synthetic oil at this point?

A: Hello. It is safe to switch over to synthet...

Hello. It is safe to switch over to synthetic oil if that is what you wish to do. It is just not a good idea to switch back and forth from synthetic to conventional oil as this can cause leaks and other problems with your oil pressure. If you want to use full synthetic oil you must use full synthetic oil for the remainder of the vehicle's life or at least for as long of a time as you used the conventional oil. It is also not a good idea to switch to synthetic oil if you are currently leaking oil as this could accelerate the leak. If you're having any oil leaks, I would recommend enlisting the assistance of a qualified professional to have the car repaired. A technician from YourMechanic can change your car's oil at the convenience of your home or office.

Was this answer helpful?

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・Save up to 30%

Get a quote

What others are asking

Q: How do I control the interior lights?

Controlling the lights within the truck is simple and intuitive, with a variety of controls making it a breeze to always have the interior lit to your liking. Here is a rundown of all the interior lights and their controls:...

Q: When I push on the gas it backfires and shakes engine. Just started out of nowhere.

Misfiring on one or more cylinders can cause a rough running or backfiring condition. Misfires can be caused by lack of spark or lack of fuel to any cylinder. Lack of spark can be due to a bad spark plug,...

Q: I was told my radiator fan does not work. I need to know if its broke or is my thermostat stuck.

The radiator fan should come on when the engine reaches a certain temperature, or immediately when you turn the air conditioning on (if so equipped). If the fan does not come on when the engine gets hot but does come...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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.