I've heard that once you put synthetic in you can't put conventional oil in it ever again. How much truth is behind this and why can't you?
That is right, I have just spent the last hour reading this subject and found that the rings not sealing is a myth. Due to Synthesized hydrocarbons such as polyalphaolefins.GSXR750MKE said:i heard that also .....it's that coventional Oil will not coat your engine parts because of the chemical reaction to the sythetic....like oil to water then don't mix.........
Nope. You can even buy conventional/synthetic mixtures (Usually called "Semi-Synthetic"). "Synthetic" motor oil is actually not pure synthetic (at least, not the stuff you normally buy at pep-boys - Mobil 1, Castrol, etc). It's actually derived from conventional oil. A pure synthetic oil wouldn't mix with a conventional.GSXR750MKE said:i heard that also .....it's that coventional Oil will not coat your engine parts because of the chemical reaction to the sythetic....like oil to water then don't mix.........
Everything else is mostly right... but Amsoil prides themselves in making their synthetic oil from all synthetics!! they say that's why it holds up better!!!SpeedWerks.com said:Nope. You can even buy conventional/synthetic mixtures (Usually called "Semi-Synthetic"). "Synthetic" motor oil is actually not pure synthetic (at least, not the stuff you normally buy at pep-boys - Mobil 1, Castrol, etc). It's actually derived from conventional oil. A pure synthetic oil wouldn't mix with a conventional.
You are always better sticking with whatever you choose to run. Most people wouldn't ever have a problem if they switched back and forth, but there is a tiny, slim chance problems can occur especially in an motor with a lot of miles on it (the way internal parts wear is effected by the oil type on the microscopic level).
- Roach
- SpeedWerks.com
We all know the chicken came first! :lol:Gas Man said:As far as the original question... answer this one for me...
Chicken or the egg?
Why would you or anybody want to?DLITALIEN said:I've heard that once you put synthetic in you can't put conventional oil in it ever again. How much truth is behind this and why can't you?
Lotsa good info.... :dthumb:twisty said:That is right, I have just spent the last hour reading this subject and found that the rings not sealing is a myth. Due to Synthesized hydrocarbons such as polyalphaolefins.
http://www.chris-longhurst.com/carbibles/index.html?menu.html&engineoil_bible.html
Read up!!!