Replacing fuse


Would replacing an 6.3A SLO BLO fuse with an 8 SLO BLO fuse be ok? Thanks for any information.
john421
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For the record AMR fuses come with a 30 day guarantee and IIRC the earlier Audio Magic fuses also come with a guarantee, at least through one big dealer. Not that it matters much as I was informed during a conference call with the primary US fuse dealer and the major fuse players that the bulk of fuses sold these days are SR or HiFi Tuning.
Addendum: Audio Horizons offers a limited 15 day in home trial with money back guarantee.