Mobil 1 5/30 "Truck & Suv" vs. regular

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Mobil sells 5w30 as regular ol' Mobil 1 and they also sell the 5w30 marked "truck & suv". What's the difference? If the truck adn suv has additional additives for "heavy" use, is there any reason you wouldn't want to use it in a passenger car engine?
 
I started using it awhile back because it was one of the few A5/B5 oils kind of readily availble. There are more now, but it with the 5 qt bottles on sale it's about $4 a qt, so I don't see much reason to switch to anything else.
 
Originally Posted By: JimBob
Mobil sells 5w30 as regular ol' Mobil 1 and they also sell the 5w30 marked "truck & suv". What's the difference? If the truck adn suv has additional additives for "heavy" use, is there any reason you wouldn't want to use it in a passenger car engine?


JimBOB,

I've used until recently the M1 "standard" for years in both my 01' Durnago and 89' Camry with fantastic results. The actual formula may vary on paper but in realy life I haven't noticed any difference. Recently I'm trying just once Quaker State "Q" synthetic cuz I have noticed a price hike. Currenly M1 list for about seven bucks a quart and the "Q" is priced almost a buck and a half less.

Durango
 
According to Mobil 1 tech services, it is the Mobil 1 5w30 with more antioxidents, more moly and more boron. I still get moly and boron confused but I think that Moly is anti wear and boron is friction modifier, or possibly the other way around?!
 
Oxidation of oil is a breaking down, or maybe better to say deterioration due to addition of oxygen. This usually comes from heavy use, pulling your camper/boat, and higher than normal oil temperatures, stop and go city traffic, pulling/hauling heavy loads. The higher the oil temperature, the worse the oxidation deterioration. I read an article on Opie Oils that said oxidation doubled with each 10C rise in oil temperature above 70C(158F). One of the products of oxidation is peroxide, which is itself a cause of oxidation. The more an oil oxides, the more, and more quickly it will oxide.. The longer the miles/time between OCI, the greater the potential for oxidation.

Antioxidents/oxidation inhibitors are added to oils to increase its resistance to oxidation which increases its service life. This service life may be much less for my pickup worked hard than for my car driven easier and at highway speeds. Without the inhibitor, the service life of both would be much less.

How these inhibitors work, I don't fully understand. I have read tech articles that say they either neutralize the peroxides or encapsulate the peroxides.

I can understand Mobil adding extra antioxidents and extra anti wear and friction modifiers to the SUV oil. However, at least where I live, the Mobil 1 5w30 and 5w30 SUV are the same price. Why don't they add it to all their oils, at least the 5W/10W oils, if it makes the oil last longer and protect better? I guess I am wondering, What is the down side or the negative? I am inclined to thing that Mobil found a market and made a product that you can test and prove is really meant for that market. If I used brand X and discovered the Mobil 1 Truck and SUV I might be inclined to think , "here is something made special for my new truck(which calls for a 5w30) that is much better than "STANDARD" oil."
 
Great wright up Frank,thanks.
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