What oil would you recommend for my 1985 Toyota Celica with a 2.4 liter four cyliner? It has about 135,000 on it, and isn't driven very much. Would a 5-30 be good? 10-30?
Toyota probably recommended 10W-30 back in the day, and most gearhead owners probably used 10W-40.
Either would work well for summer use in this engine.