Won't hurt, could help.
Techron is the best (IMO and others)
2000 V70R Black, 121,000 miles (Wife's)
2000 V70R Silver, 36,200 miles!!! SOLD (I will regret this)!
2007 XC70 White, 122,000 miles, loaded and mint, mint, mint in all aspects,
Contact info for purchases: jrl1194 (at) aol (dot) com