Engine/Transmission (1998.5 - 2002) going from synthetic back to standard oil

[Patriot Diesel]

OK guys... I have always heard it is not a good idea to go back to standard motor oil... once you have switched to synthetic...

WHY?

 

[lschultz]

From what I have read theres no reason you can not switch back. I know I have traded cars/trucks and they probably switch back when it came time for an oil change. Boy down the road from me that used to run syn. went back to regular oil on his z71. I think he was just to tight. Thinks he is saving $. You have to know this boy to understand him

 

[swampfox]

oil switch

There is no problem going from one to another. I've done it in cars, trucks and my 2001. 5 5. 9 ISB. In my current truck I run dino in the Summer and Switch to synthetic in the Winter. Up here in Minnesota I've found that at -20 or -30 F cars and especially trucks start a lot easier with synthetic. I do change all the oil and filter when switching.