I can't think of a reason not to use AISIN with the price being similar to the others. It was when I purchased 6 months ago and I'm greatly pleased with it.
I'm also a fan of the Aisin TKT021 kit. Aisin is the OEM manufacturer of the water pump, and Mitsuboshi is the OEM manufacturer of the actual belt (the belt that comes with the TKT021 kit is a Mitsuboshi).
I used AISIN TKT021 kit and would use that again. I think there might be a few rollers the kits don't include which might be worth replacing every couple of timing belts.
I’ve used the Aisin brand in three different Sequoias with very good results.
This here is the complete JAOS (Japan Off-road Service) catalog for the FJ Cruiser. It includes: JAOS BattleZ Brake Pad Type-EX (Front & Rear)
The best performing oil for cold starts is probably Pennzoil platinum full synthetic if your particular prius uses 0w-20. It is made from syn gas, and is particularly thin.
For comparison, i got 6,000 miles out of Pennzoil platinum vs royal purple, with which i would get 5,000 miles prior to the oil changing color and about a 1 to 2 percent dip in fuel economy. Regardless of the wear additives, Pennzoil platinum lasts longer, again likely due to the cold start performance and the way the hybrid drivetrain works.
I personally use mobile1 with a Lucas oil stabilizer. Oil still looks pretty clean when I change it.
I use mobil1 or castrol full synth 0W-20 for prius engines below 200k and 0W-30 for those above it. More than 30k mi now so far so good. I like the castrol better bec my engines sounds much quieter vs m1.
Have you replaced your knock sensor? If it’s bad, it might be sending false knock readings to the ecu. It might be the reason the fuel mix is so rich.
my 2009 had an optima and it only lasted 2 years
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