[Tony Liscio]

I bought Castrol Syntec Blend 5w-30 for my 2004 Prius. Has anyone had experience with this type Blend Oil? Is it safe should I use full synthetic oil.
I won't have an Oil /Filter change till Feb.'04 Need to know before.
Thanks.

 

[Joel]

This has been talked about quite a bit - probably best to use the search feature of the board to get the full benefit of prior conversations.

 

[Henry]

I've been using Castrol Syntec 5W-30 full synthetic, not the blend, for almost 10K miles on my '02. The difference in cost is only a few dollars, so I figured why stint? Prius deserves the best. The car seems to like it just fine. I intend to keep using it when the free oil changes run out. Meanwhile, I take 3.5 qts. of the Syntec to the dealer and tell him to use that, to avoid the overfilling problem. And I installed a Fumoto oil drain valve to make everything a lot easier.