Has anyone ever done this? I've always heard never to blend oils, even different brands. Basically I wont have time to change mine in the morning, but it needs a little, and all I have is synthetic, it has dino oil in it now. just wonderin if it would be any harm to add just a bit or should I just stop and get some dino.

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1996 E300 D
1992 300D
1990 Ford E-350 7.3 Diesel AKA "the Deep Fryer"

A little bit won't hurt to top it up. But, it's best to pick one type and brand of oil and stick with it.

Mixing different types and brands of oils may cause conflict with their additive packages that could reduce or alter the additives intended function.

I do it. I cannot say for sure if it is good or bad, but I know others who do it too.

I have been running half rotella and half mobil one for diesels in my cummins.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Guys!!??? Just about every oill out there has their version of blended synthetic/dino oil..... Motor oils have to meet car manufactuirer's specs so they all have to meet a standard. Some exceed it.

IMO, as long as this standard is met, oil is oil.

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the sooner you start... the sooner you'll get done If it ain't broke, don't fix it.. Its always simpler to tell the truth...
2007 Honda Accord EX
2007 Honda Accord SE V6
96 C220
97 Explorer - Found Another Home
2000 Honda Accord V6 - Found Another Home
85 300D - Found Another Home
84 300D - Found Another Home
80 300TD - Found Another Home
Previous cars:
96 Caravan
87 Camry
84 Cressida
82 Vanagon
80 Fiesta
78 Nova
Ford Cortina
Opel Kadet
68 Kombi
Contessa

They are also in control of the entire process. They can formulate the additives they put in it specifically for that blend they make.