Burning 1q of 2c oil every 2500 miles in a new 4c?

[Audi Junkie]

That's the consumption rate at 500:1.

Am I killing my emission system? I don't remember the ppm of zink and phos in 2c, anyone have any ideas? I've been doing 2c for a good while now. I have 2 new vehicles under 10k miles, should I quit?

 

[bmwtechguy]

There should not be much if any ZDDP in a TC-W3 outboard 2-stroke oil, if that is what you are using, since TC-W3 is supposed to be ashless. At 500:1 I cannot see you causing any harm to anything related to emissions, and the practice should add a bit of lubricity to your fuel and top piston ring. That's just my opinion. Which 2C oil are you using?

 

[Loobed]

I don't think you should use 2-stroke oil, or any other UCL, in a new motor. The rings and valves need to seat. I would have waited 1 year or 10K miles before using it.

 

[Audi Junkie]

Well, in 3 cars since new, no ring "issues", when other examples of these engines do burn oil. I'm just worried about zink and any other bad chemicals for cats.

I use the PZ Semi-Syn Marine, which is supposed to be biodegradable, thusly better base oils.

Just looking for second opinions on the safety.

 

[Audi Junkie]

Originally Posted By: MolaKule
Here is a typical synthetic 2-cycle oil analysis:

Fe 3
Cr 0
Ni 0
Al 0
Pb 2
Cu 0
Sn 0
Ag 0
Ti 8
Si 0
B 3
Na 2
K Mo P 21
Zn 11
Ca varies from 50 to 250ppm
Ba Mg 2
Sb Viscosity is around 9.5@100C

Sulfur % wt 0.1%



So, no problems there. Good to know.