Synthetic Motor Oil Pros and Cons

[machzed]

Just wondering if there are any pros or cons to breaking in a new motor with synthetic oil or should you break it in with convensional oil?

Thanks

 

[woolyviper]

i break mine in on 4S and then after 1000 miles go to MOBIL 0W30

 

[Iceman56]

Don't use synthetic oil to break it in, it is to slippery and won't let the rings seal completely.

 

[johno]

What he said

Just broke in the motor first 300 with conv oil now going to 0w30 mobil.

 

[ROCKERDAN]

i broke mine in after the new build with 0w30 yamalube semi....then after 600 miles went to synth.


you guys running mobile 1 0w30,you should realize the zinc/phos levels in those automotive oils is very low. good discussion here:
http://www.ty4stroke.com/viewtopic.php?t=77213

Dan

 

[rxrider]

Broke mine sleds in on the factory oil, then went with Yamalube 4S 0w-30 everafter. I run it because of availability and price, also because the shop manual what me too LOL

 

[HURRICANE]

We brake in a Niki'ed cylinder on synthetic because the rings don't really need to cut the cylinder walls.On iron bores,we brake in with conventional oil to allow the rings to cut the tips off the cross-hatch.Then we switch to synthetic oil fortified with zinc if possible

 

[machzed]

Thanks guys just thought I would throw it out there but convensional will be the route Im taking.