What viscosity of oil does this group recommend for a 6.2L diesel? I
normally use SAE 30, but am thinking I should switch to something else.
Seems nowadays they are coming out with motor oils that are formulated for
diesels, but I do not want anything fancy like those synthetic oils. Been
thinking of this for oil pressure reason. At idle, it is at 35-40 psi, when
on the highway, not sure the rpm as I do not have a tach (yet), it is about
45-60 psi. Any suggestions here? Thanks.
The posted oil pressures are fine (in fact quite good). I use 15w40 only in
my 6.2DSL. Try to use a diesel oil as they have anti-foaming agents and
additives that will control soot. Don't bother using a synthetic, it is a
waste of money unless you are running a turbo (synth won't coke in a turbo
when the engine is turned off). So if you change you own oil get a descent
15w40 oil and a good quality filter. Don't worry about the designer oils
and filters. My 6.2DSL has over 400k and starts w/o problems and has about
the same oil pressures as you do. It's a good engine treat it well and it
will last a long time.
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