new rear main seal switch 3 synt. with 130K?

[BIGT94z]

well i got my 5 speed swap and we put a new rear main seal in it....i wnat to switch to synthetic since i'm running pennzoil 10w30...was thinking of royal purple or mobile 1...should i do in intervals like one synthetic and 3 penns...or just all of a sudden to a full synthetic...tell me what you think and i did search....but alot of peoples opinons were half and half...is it 2 late for me to switch to a good oil?????

[SeanC]

as long as all your seals are in good condition you will be fine. i switched my front and rear main started leaking a little so i replaced them and have been happy ever since.