New oil viscosity recommended

ScottY · 10-05-2006, 04:28 PM

While searching for TSB's for the My Brakes are Barking at Me thread, I come upon this TSB.

The Prius engine model is 1NZ-FXE, so the new recommended viscosity is 5W-20.

galaxee · 10-05-2006, 04:47 PM

"for prius vehicles, refer to tsb eg050-04"

http://www.alldata.com/tsb/Toyota/11371392...0R-04/5004.html

still 5-30.

ScottY · 10-05-2006, 04:57 PM

Oh right! Miss that line... thanks for correcting!

Now this got me wondering, how come the oil spec for Prius is not changed while other engines in the same series got the update spec for better FE, protection, and cold start?

galaxee · 10-05-2006, 05:19 PM

i'd guess that they've updated the design of the engines somehow- why they didn't mess with the prius, who knows?

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10-05-2006, 04:28 PM	#1
ScottY Senior Member Join Date: May 2005 Location: Long Island, NY Posts: 1,245 My Car: 2005 Prius Package: #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	While searching for TSB's for the My Brakes are Barking at Me thread, I come upon this TSB. The Prius engine model is 1NZ-FXE, so the new recommended viscosity is 5W-20.

10-05-2006, 04:47 PM	#2
galaxee running WOT until out of fuel Join Date: Mar 2005 Location: central NC/ western WI Posts: 9,080 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 21	"for prius vehicles, refer to tsb eg050-04" http://www.alldata.com/tsb/Toyota/11371392...0R-04/5004.html still 5-30.

10-05-2006, 04:57 PM	#3
ScottY Senior Member Join Date: May 2005 Location: Long Island, NY Posts: 1,245 My Car: 2005 Prius Package: #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	Oh right! Miss that line... thanks for correcting! Now this got me wondering, how come the oil spec for Prius is not changed while other engines in the same series got the update spec for better FE, protection, and cold start?

10-05-2006, 05:19 PM	#4
galaxee running WOT until out of fuel Join Date: Mar 2005 Location: central NC/ western WI Posts: 9,080 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 21	i'd guess that they've updated the design of the engines somehow- why they didn't mess with the prius, who knows?