i am running a t3/to4e 60trim .63 ar garret turbo what should i run for the oil feed line a -4 or -3 and what fitting size should i use -3 or -4 i basically gotta redo my whole oil feed line.thanks

 

This has probably been covered like twenty times, but some people have said that -4 is too large, and can cause problems with too much oil pressure/volume for the turbo/turbo seals. -3 seems like the safer choice.

 

So use a -3 line?and -3 fitting and nipples?

 

yup thats what hes saying...although i got a t4 off of a John Deere, and it came with a -4 an feed fitting. I wonder if the oil pressure is the same as the GSR pump that Im going to be using....