I know Kelly but I have done a completely non- scientific survey amongst my friends and the ones who did it didn't tear whilst the rest of them did- having said that am sure someone will be along soon enough to say it didn't make any difference.
aparently almond oil is ment to be good. i bought some when i was pg with dd and it sat in the bedside table for about 3 weeks, then i had her 3 weeks early, so i dont know if its any good, but there you go
You can buy a small bottle of olive oil for, ahem, 'beauty and health' purposes in Wilkinsons for 79p. I used that but no idea if it would have helped as ended up with a crash section.
My Hypnobirthing book suggests sweet almond oil, olive oil or vitamin E oil I think. You can buy special oil for perineal massage - don't know if it's any good or what's in it as was too tight (no pun intended) to pay the extortionate price for it.