Originally Posted By: KingCake
toyota vvti systems are notoriously sensitive to viscosity for noise and check engine lights
So, what does it do when ambient temperatures are low? Throw a CEL? You can have your engine at operating temperatures and still have oil temperatures lagging significantly. Shannow's question still stands. What particular parameters cause the CEL to be thrown? What do they do to prevent the problem in other countries where something other than a 20 grade might be used?
toyota vvti systems are notoriously sensitive to viscosity for noise and check engine lights
So, what does it do when ambient temperatures are low? Throw a CEL? You can have your engine at operating temperatures and still have oil temperatures lagging significantly. Shannow's question still stands. What particular parameters cause the CEL to be thrown? What do they do to prevent the problem in other countries where something other than a 20 grade might be used?