15w 50 oil - ZR-1 Net Registry Forums

edram454 · 11-21-2013

Any one else out there use 15w 50 oil in their 1990 Z. It says on the oil fill cap 10w30 so I wonder if 15w50 would cause any damage to components. A knowledable member said he put 15w50 in his 90 z and it help reduce the puffs of smoke quite a bit. I know the 90's dont have exhaust valve seals so there is some smoke at start up... on deceleration.. etc.. zero at idle. I am thinking of doing this with mine but just want to know if others have tried this. Any info appreciated.

tx edramos.

11-21-2013	#1
edram454 Join Date: Nov 2013 Location: .. Posts: 693	15w 50 oil Any one else out there use 15w 50 oil in their 1990 Z. It says on the oil fill cap 10w30 so I wonder if 15w50 would cause any damage to components. A knowledable member said he put 15w50 in his 90 z and it help reduce the puffs of smoke quite a bit. I know the 90's dont have exhaust valve seals so there is some smoke at start up... on deceleration.. etc.. zero at idle. I am thinking of doing this with mine but just want to know if others have tried this. Any info appreciated. tx edramos.