Q: I have several cans of engine oil in my garage. The brands vary, as does the viscosity. My question is, can I use these oils in my 2008 Toyota Camry?
A: You should never mix oils and or viscosities in late-model vehicles. If you know someone with a pre-1990 vehicle, you can use the old oil in old vehicles. The use of the incorrect oil in a late-model vehicle can cause major problems with the internal moving parts and hydraulic powered timing control solenoids.