First post
I have 2008 Rav4 4cyl 4WD Automatic with 47Km miles on it.
Bought the vehicle used at 20K miles.
At 30K miles, I deicde to change the ATF and replaced with correct amount of OEM WS fluid. I did 1 drain/refill. I like to keep my ATF clean; there was no real reason to do this change. At 35K miles, I did another drain/refill but this time Valvoline Maxlife ATF compatibile with WS.
A few thousand miles later, I start hearing a slight whine/drone whenever I accelrate between 24 and 26 mph under slight load e.g. slight hill or moderately flat surface. If I take my foot off the accelerator the sound is gone. You can also hear the same noise if you decelerate but only for a seconds or two since it does not take long to pass from 26 to 24 mph. There is no noise at other speeds.
Although this happened after putting in Valvoline Maxlife ATF, I do not want to blame this situation on the Valvoline. It was only after a few thousand miles and the transmission still had 50% WS ATF in the mix.
I have since done another drain/refill with WS ATF (so we now have 25% Valvoline left in the system) and added LubeGuard 60902 ATF Protectant.
Still no change.
One thing that I have observed is that I will not hear the noise when I drive the engine cold for the first 2 minutes.
Does this sound like a Torque converter issue? Would using a thicker ATF solve the problem? What ATF could I use?
Of course, dealer says it's normal
I have 2008 Rav4 4cyl 4WD Automatic with 47Km miles on it.
Bought the vehicle used at 20K miles.
At 30K miles, I deicde to change the ATF and replaced with correct amount of OEM WS fluid. I did 1 drain/refill. I like to keep my ATF clean; there was no real reason to do this change. At 35K miles, I did another drain/refill but this time Valvoline Maxlife ATF compatibile with WS.
A few thousand miles later, I start hearing a slight whine/drone whenever I accelrate between 24 and 26 mph under slight load e.g. slight hill or moderately flat surface. If I take my foot off the accelerator the sound is gone. You can also hear the same noise if you decelerate but only for a seconds or two since it does not take long to pass from 26 to 24 mph. There is no noise at other speeds.
Although this happened after putting in Valvoline Maxlife ATF, I do not want to blame this situation on the Valvoline. It was only after a few thousand miles and the transmission still had 50% WS ATF in the mix.
I have since done another drain/refill with WS ATF (so we now have 25% Valvoline left in the system) and added LubeGuard 60902 ATF Protectant.
Still no change.
One thing that I have observed is that I will not hear the noise when I drive the engine cold for the first 2 minutes.
Does this sound like a Torque converter issue? Would using a thicker ATF solve the problem? What ATF could I use?
Of course, dealer says it's normal