TCWII OR TCWIII FOR MY 3.4L

[CARLOS]

HY ALL OF YOU,<br /><br />COULD I USE FOR MY OLD 1990 MARINER 275HP 3.4L EITHER TCWII OR TCWIII? CAN I MIX?<br />IF THIS ENGINE RUNS GOOD WITH TCWII, WHY SOME PEOPLE TELL ME IT´S BETTER TCWIII. I´VE TESTED BOTH AND ENGINES RUNS SAME...SAME TEMPERATURE, SAME TOP SPEED, SAME ACCELERATION..<br />MY UNDERSTANDING TCWII IS FOR ENGINES UP TO 1998. TCWIII IS FOR ENGINES FROM 1998 TO 2003...<br />WHAT´S THE REAL SITUATION..<br /><br />THANKS FOR YOUR ATTENTION.<br /><br />CARLOS<br />VENEZUELA

 

[Jack Shellac]

Re: TCWII OR TCWIII FOR MY 3.4L

Unleaded gasoline has a tendency to form excessive amounts of carbon, which can be very harmful. TCW III has an additive to reduce carbon formation. You can still use II, but need to add additive like OMC Carbon Guard and decarbonize your motor more frequently. You can mix the two, but your carbon protection goes down accordingly. III is best for all motors.

 

[DJ]

Re: TCWII OR TCWIII FOR MY 3.4L

Carlos,<br /><br />The TCW-III is a better oil. It does everything that II did, plus some more.

 

[seahorse5]

Re: TCWII OR TCWIII FOR MY 3.4L

TC-W3 oil has been out for 11 years now. No major producer has made TC-W2 for many years.