Q: Changing oil grades without flushing

asked by on

Can you change engine oil grades from 10-40 to 20-40 without flush?

Sure, all oil is mixable. You can mix synthetic and non-synthetic oil, too. You’ll just want to take most of the oil out when you change it and what is left is mixable. It won’t hurt anything.

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. Changing oil grades without flushing

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: How do I reset the oil change due Warning Light?

The oil change due Warning Light will be displayed on your electronic vehicle information center (EVIC) display screen. The indicator is cycle-based, so it may not go off even when you have your oil changed. Resetting the oil change due...

Q: Hello, I have an I35 Infinity 2002. Car wouldn't go pass 40 and acted like it wanted to shut off. I parked the car and saw white smoke.

If your engine is smoking white and has the smell of oil, then check for any oil leaks that would be leaking onto the exhaust pipe and burning off. The white smoke is water burning in the chamber and getting...

Q: Oil on engine with burning smell.

Engine oil, especially oil dripping or leaking on the exhaust will create an oil burning smell. The first thing to do is to determine whether the oil on the engine is caused by a leak or due to spillage during...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...