quote:Originally posted by ADFD1:
Shop cars, train station cars, grocery getters, or old beaters I always felt should get maintained but there is no point spending top $ on oil. Save the big $ oil for the best cars of the fleet. Besides in most applications the entire car will rot and fall apart long before the engine fails, unless the engine is a poor design or specifically calls for synthetic oil. This has been proven time and time again. Most car buffs spend more than they have to for oil and filters. Proper maint, and proper intervals for changing oil is the key to long engine life.
AD
It has been proven time and time and ......... time, again.
But due to the reasons pointed out by BLK above, it just does not register with some.
All this nonsense that conventional oil is bad, or causes sludge, is just that, nonsense.
Cars still come factory filled with it. Oil companies still make it. Millions of cars still run on it.
Using synth oil along with 3-5k oil changes or when your engine doesn't call for it is like using 93oct in an engine that calls for 87.
Certainly using synth in a Yugo is throwing money away.