The 2 big troubles over the RB30 relate to the oiling program and crank collar. This isn’t precise to simply the RB30 collection, as the RB20/25/26 also have noted concerns Along with the oil pump and oiling units. All of them have problems with this concern (early RB26 only). Below https://chancegnmjf.ssnblog.com/27829779/the-smart-trick-of-nissan-skyline-rb26-that-no-one-is-discussing