OK - after a bit of web searching and just for your info, I have looked at the major oil company web sites to see what oils they actually list for my SV and I have listed them with each makers premium grades first.. I would guess that choices for the FZR would be similar.. SHELL - advance ultra (synthetic) advance VSX (semi-synthetic) MOBIL - Mobil 1 V-Twin 20W-50 (synthetic) Extra T (semi-synthetic) SILKOLENE - Pro 4 Plus 5W/40 (full synthetic ester) Pro 4 10W/40 (full synthetic ester) Comp 4 10W/40 (Synthetic ester) <!-- m --><a class="postlink" href="http://www.silkolene.com/productchooser.asp">http://www.silkolene.com/productchooser.asp</a><!-- m --> <!-- m --><a class="postlink" href="http://www.silkolene.com/products.asp">http://www.silkolene.com/products.asp</a><!-- m --> VALVOLINE - dura-blend 10w-40 (semi-synthetic) this is interesting because DURA-BLEND is listed for a lot of motorcycles and not their designated bike oil. Look at the R1, they recommend XLD or dura-blend 4-Stroke Motorcycle Oil 15W/50 <!-- m --><a class="postlink" href="http://www.datateck.com.au/lube/valv_au/default.asp?section=4">http://www.datateck.com.au/lube/valv_au ... ?section=4</a><!-- m --> CASTROL - R4 superbike (synthetic) supercheap $60 GPS (semi-synthetic) supercheap $60 active 4T (mineral) MOTUL - 300V 4T FACTORYLINE 10W40 (full synthetic) 5100 ESTER 10W40 (semi-synthetic) 3000 4T 20W50 (mineral) <!-- m --><a class="postlink" href="http://www.motul.com.au/product_line_up/4stroke/4stroke14.html">http://www.motul.com.au/product_line_up ... oke14.html</a><!-- m --> I hope that makes your choice of oils easier..