Hello all from Appalachia! Great forum, been reading for months, recently purchased a 1979 Corolla and trying to get it ready for summer. I've been in automotive profession and old car hobby for 33 years, but this is my first vintage Toyota and I'm loving it. I have some questions and hope you can help me, for starters...
1. These 2TC engines have a flat tappet camshaft so I should be running a quality old school oil with high ZDDP, but I'm concerned with viscosity. The original manual states 20w50 on the back, but also 10w40 for summer temperatures in the charts, what do most people run these days?
2. Have any of you used Redline MTL in the T50 transmission? Reason for asking is, I have a few quarts in stock and would like to use it because its considered one of the best, but I just wanted to make sure there was nothing incompatible I didn't know about.
3. As for the rear differential, its an SR5 package so it has the heavy duty rear with 3.90 gear ratio, suggestions on gear lube?
4. Tire pressure: The manual calls for 24psi, but tires were very different 40 years ago. I'm running a quality modern 185/70/13 radial on the factory steel 5" wide rally wheels. Would 30psi be a good place to start for normal street use?
Thanks!