. Also since synthetics don't break down as easy as convential the engine stays cleaner longer internally, no nasty sludge build up under the valve covers.
I'm gonna take some demerits on this one.
I HAD a 79 Civic for years for a commuter :oops:
I rebuilt the engine after 120 thousand.
After the rebuild I ran syn exclusively.
At 80k a main bearing went.
It was sludged up just as bad with the syn as the first time with regular oil.
What I THINK is going on is that engines are cleaner these days, period.
That was a carborated old tech engine and I just THINK it was less efficient engine. Loose clearances and all that.
Again, I just think this one.
