The two significant difficulties to the RB30 relate to the oiling technique and crank collar. This isn’t unique to just the RB30 series, as being the RB20/twenty five/26 also have noted issues Using the oil pump and oiling devices. They all are afflicted with this issue (early RB26 only). Below https://rb26motor23334.vidublog.com/27744936/top-latest-five-nissan-skyline-rb26-engine-for-sale-urban-news