I forgot my previous question.
What differences will I have on use of XD50 and XD100, (correctly set computer), besides obviously price, on the following:
1- Fuel consumption
2- Oil consumption
3- Maintnance, service frequency, carbon pileup, etc
4- Engine life expectancy at nomal sport fishing use on large lakes.
5- Lubricating efficiency of each oil.
Any differences worth commenting.
As a rule of thumb, you will have less carbon buildup internally using the synthetic XD-100 oil and it also is a higher quality oil for less wear and tear on your motor. It will probably not affect fuel use, though. With the motor set to the XD-100 oil setting, you will use less oil than at the TC-W3 programming. Oil use is computer controlled and dependent on how you run your motor - high speeds, more oil - hard accelerations, more oil - lots of trolling or slow speeds, much less oil burned.
The XD-100 has better lubricity as it can be used at a reduced rate. As for engine life, I see 2000 hr. and up E-TECs using both oils.
The factory suggests using XD-100 at the TC-W3 setting if used commercially, for high performance, or heavy duty use such as pushing barges, etc.
The choice is yours.