Re: [ST] Mobil 1 15W-50 SuperSyn Oil

["Rick & Joyce" <rnjwes@xxxxxxxxxxx>]

"Blake Sobiloff" wrote:
<snip>
> (FWIW, though, I'm going to switch to Shell Rotella T Synthetic
> 5W-40-- <snip>

Blake, I've done similar research and use Delo 5w-40 synthetic in our
TDI.  It meets the same specs as Rotella T and has a much better case
price locally.  But I'm concerned about the '5w' cold viscosity
rating.

FWIW, in addition to info already quoted in this thread, the factory
manual (pn 3850760, issue 3 of 10.99) states on pg 8.5:

"Do not use 10w rated oils with a hot viscosity rating greater than
40.  For example, DO NOT use 10w-50."

and

"Do not use oils with a cold viscosity rating of 0w or 5w."

HTH,
Rick in Oregon
'01 Sprint ST




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