Does one want an oil with low viscosity modifier content especially for direct injection engines?
GM has also decided on 30 wt oil (Timing chains, fuel dilution etc).
For most drivers changing the oil atleast twice a year would fall into the normal category. Then for most of usa you could specify 10w30 for most of the year. For the winters 5w30 recommended by say GM although it likely has lot of viscosity modifiers ? The convenience to customer factor is lost when one has to take the car in for deposits removal costing $$$. So will we go back to old days of 30wt and seasonal oil changes ?
In a way its already been done without advertising it.
Its too bad one cant use 10w30 in new GM during summer and still satisfy warranty.
Can a consumer get some idea of viscosity modifier content of an oil by looking at noack?
GM has also decided on 30 wt oil (Timing chains, fuel dilution etc).
For most drivers changing the oil atleast twice a year would fall into the normal category. Then for most of usa you could specify 10w30 for most of the year. For the winters 5w30 recommended by say GM although it likely has lot of viscosity modifiers ? The convenience to customer factor is lost when one has to take the car in for deposits removal costing $$$. So will we go back to old days of 30wt and seasonal oil changes ?
In a way its already been done without advertising it.
Its too bad one cant use 10w30 in new GM during summer and still satisfy warranty.
Can a consumer get some idea of viscosity modifier content of an oil by looking at noack?
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