I'm not worried about the switch to synthetic at all at this point. I've driven it a couple of days now and the oil is clear as new.
I don't think I'll be disabling the power steering though. When I EOC around a corner, it requires significant effort to turn. I doubt a hose reroute would fix that adequately. (I have done it before on a race car and it does help some, but not enough with lower ratio racks.) I think the only reason it is such a non-issue with the Tercel is because the car is designed for some serious low speed off-roading which is what it's there for.
As for the tires, I don't wanna say what the sidewall marking is. I'll just suggest that sidewall pressure ratings are based on maximum loading of the tire under stress, and my car is about 75% of their maximum load and I don't intend to be running any autocrosses with them. Regardless, it's going to be a moot issue very soon, as I have the Sumitomo HTR T4s on order and should have them on before next week.
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