Marshall Booth wrote:
> Group IV or IV/V synthetic oil (all the Mobil 1 oils are IV or IV/V
> mixes) will increase cold cranking speed by 30-50% and low minimum start
> temp by about 10 degrees (or a bit more) other things equal.
>
Marshall, I'm curious if you've heard any of the rumors that
David Brodbeck wrote:
Marshall Booth wrote:
Group IV or IV/V synthetic oil (all the Mobil 1 oils are IV or IV/V
mixes) will increase cold cranking speed by 30-50% and low minimum start
temp by about 10 degrees (or a bit more) other things equal.
Marshall, I'm curious if you've heard any of
Marshall Booth wrote:
> There have been rumors that Mobil 1 has be switched to group III oils
> every year for almost 20 years. I expect that most of those rumors were
> started by people that made their living selling group III synthetics.
> It hasn't happened as of the last time I checked (abo
