Skip the auto shop - Our mechanics make house calls

Q: I've been checking my oil and it's still at fulll and the oil is still light brown. What are some key indicators that I need it changed?

asked by on

I've been checking my oil and it's still at full and the oil is still light brown. What are some key indicators that I need it changed?

A: Hello. Most of the indicators that the oil ...

Hello. Most of the indicators that the oil needs to be changed are not visible to the naked eye. Simply getting oil hot while driving down the highway will darken it. The road grit and engine wear "debris" is often measured in microns (1 millionth of a meter), microscope territory. The simplest guide for oil and filter changes is 3-5,000 miles for highway use. Much more often for off-road or extreme duty situations (heavily loaded trucks, racing applications, stop-and-go driving only). Oils also accumulate acids over repeated cold-hot-cold-hot cycles, which attack metal surfaces including bearing, cylinder walls, etc. Follow your manufacturers guidance for oil/filter service.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: Oil change question

Hey there. Your car has an oil capacity of 4.8 quarts. Keep in mind that some of this will be also absorbed into the oil filter once you start the engine up. Be sure to check the oil immediately after...

Q: Oil leaks

Depending on the severity of the leak and where it is coming from, it may or may not be safe to drive. If the leak is leaking at a steady rate and losing oil quickly, this may be unsafe to...

Q: Is it worth it to purchase the additional toyota maintenance care package they try to sell you when you buy a new rav4?

The first oil change is recommended to be at 10,000 miles and every 5,000 miles after that. Besides one air filter replacement and tire rotations the rest is basically all inspections for problems that may occur. For the amount you...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...