Hello my dear friends i have small question.
There is 2003 Engine that probably was running conventional oil for 86000Km ( thousand )
and my plan is to switch to full synthetic OIL ( i think Amsoil )
so would it be 100% safe i heard a loot in old cars its not good 2 do so it may start leaking and some other bad stuff.
or other way car was running Synthetic oil for long time and now i will switch to conventional.
Engine will work more quiet or Conv. or Syn. oil ?
i wanna switch to Synthetic... and do changes every 6-7Km.
( i know its a waste but i wanna be on safe side .. )
And what about automatic Transmission what oil its mazda 3 2004.
4 gears Triptronic Dexron V ? what i should use there
Thx for help, and sorry for my spelling mistakes and bad Englis im trying to improve it
Best Regards Kris
There is 2003 Engine that probably was running conventional oil for 86000Km ( thousand )
and my plan is to switch to full synthetic OIL ( i think Amsoil )
so would it be 100% safe i heard a loot in old cars its not good 2 do so it may start leaking and some other bad stuff.
or other way car was running Synthetic oil for long time and now i will switch to conventional.
Engine will work more quiet or Conv. or Syn. oil ?
i wanna switch to Synthetic... and do changes every 6-7Km.
( i know its a waste but i wanna be on safe side .. )
And what about automatic Transmission what oil its mazda 3 2004.
4 gears Triptronic Dexron V ? what i should use there
Thx for help, and sorry for my spelling mistakes and bad Englis im trying to improve it

Best Regards Kris