Compression Ignition Addict
Join Date: Nov 2006
Location: New Jersey/Pennsylvania
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Blending Dino and Synthetic
Anybody see or know of a problem blending (mixing) Dino Group II base oil and
"synthetic" Group III ?
For example: Rotella T 15W-40 and Rotella T Synthetic 5W-40.
I have been using and have alot of Rotella T but would like to take advantage
of the synthetics 5W winter properties, especially at start up.
After I started thinking about it, sounds like the higher V.I. (Viscosity Index)
and TBN of the synthetic might be good all year round.
Could just switch over to 5W-40, but wanted to use up my stock of
Thinking about a 50/50 mix at next oil change.
Anybody ever done this?
Should I start slow, like 25/75 first to clean out engine?
What do ya think?
2002 F350 7.3L PSD HO SCLB HD 4X4 6-SPD LS 3.73
Bilsteins, Mag-Hytec Diff. Cover, FS-2500 Bypass Filter, Billet T-Stat Housing, 203* T-Stat, 4" MBRP SS TB, B&W GNTB.
2006 Jeep Liberty CRD 4X4 Some Mods.
2003 Cobra Coupe