Captain Chris Yacht Services Captain Chris Yacht Services
   
Bridges to Everywhere   Seminars - Trawler Training - Rendezvous - Boat Shows   Trawler Fest - Anywhere USA   New Owner Training Aboard A Cruisers 455 with Captain Chris
 
About Us       Delivery       Training Onboard      Testimonials      Training Video's & Ship's Stores      YouTube Channel

Ask Captain Chris

Calendar

Seminars

Photo Log

Favorite Links

Galley Recipes

Maintenance

Newsletter

Home

Find us on
Facebook

Follow us on Facebook

Cruisers 455 Asks Captain Chris About....

TrawlerFest Stuart FL

Georgia Tech Alum Starts the LOOP Trawler Training aboard a Krogen Express 52

Beneteau Swift Trawler 34 Stuart to Miami

Living the Dream on a Beneteau Swift Trawler 52

Future Loopers or Maybe Coastal Cruisers

Grand Banks 46 - SOFT LANDING sends thanks

We Did It!

What Flavor Is Your Motor Oil?

Captain Chris Yacht Services
What Flavor Is Your Motor Oil?
Look at the chocolate milk on the left dipstick. On the right is a dipstick which looks like it was wiped clean, ready to check the oil...but look closer and you may see the honey colored oil- Clean!
Additional Images
What flavor is your motor oil?

What flavor is your motor oil? Honey, coffee or chocolate? This is a serious question about the health of your engine.
 
  • Honey or yellow oil is brand new and smells sweet.  Diesel engines built before 2000 will blacken the oil in about five engine hours. Newer diesel engines and most gasoline engines usually will not dirty the oil for a longer period of engine hours.
  • Coffee or black oil has removed carbon from the combustion chamber of the pistons and smells of burnt, carbon odor and taste (Yes, I taste my oil although you may wish to refrain). So, monitor your oil change cycle and be sure to change the filter too.
  •  Chocolate milk means raw water has leaked into the lubricating oil and the engine should not be operated. Water can enter the oil system through a raw water leak in an oil cooler heat exchanger or worse, a cracked head or gasket.
  • Strawberry milkshake color may be raw water leaking into the transmission cooler heat exchanger and mixing with ATF, Automatic Transmission Fluid.


Learn more about DIY owner maintenance in our next Introduction to Boat Systems course. Click here for information about our classes or call 772-205-1859 to find out about our next class and learn how you can participate.

 We pulled 2 1/2 gallons of chocolate milk from this engine.
     

Click here for more Maintenance

View other articles written by Captain Chris Yacht Services