Zinc is mainly in racing oils for those with older engines using flat tappet cams and having no catalytic converter. That's why you don't see it in regular oils for todays cars. It's also technically not legal to use some racing oils in daily street cars. I don't know what you're talking about recommending zinc for small engines.I say race oil because you want to have a good zinc package in a small engine
So I gave an educated opinion and you posted simply to say that I'm wrong? so a small engine is not a car engine so it shouldn't get that oil... Small engines usually (not all) are splash lubricated flat tappet motors with no cat. the purpose of zinc in oil is not just for flat tappets because what the zinc package does is prevent metal to metal contact. zinc is used up in the oil as needed whenever this near metal to metal contact happens. it is essentially burned up in place of doing damage to internal parts. alot of cars today could benefit from having zinc seeing that a lot of overhead cam engines are still basically flat tappet. with no rollers its still a cam lobe being spun right ontop of a valve tappet.. Race oil also usually does something else. Alot do not contain a detergent package. in a race engine you usually want any and all debris to fall to the bottom of the pan and stay there vs being circulated through the system. In a small engine you dont even have a filter so again you want all that debris to rest at the bottom of the engine instead of being splashed around. having no detergent also helps protect against foaming of the oil. When you buy small engine oil from your local stihl or echo dealer your essentially buying race oil. these oil almost always have no detergents and have a zddp package in them. I only rec. the use of "race oil" because I doubt that a "small engine" oil could be purchased in such a low viscosity. My actual job description is race car fabricator. I do not "build" engines as I do not have the machinery to do it but I sure do alot of repairs and use alot of different specialized oils.Zinc is mainly in racing oils for those with older engines using flat tappet cams and having no catalytic converter. That's why you don't see it in regular oils for todays cars. It's also technically not legal to use some racing oils in daily street cars. I don't know what you're talking about recommending zinc for small engines.
I stand corrected on my statement about that. running batteries in parallel should be fine with different cca batteries. the total current is used and the batteries will maintain each other to stay equal. Its running battery banks in series (if you went to 24v system) that each 12v bank must have the same capacity. by the way if you do get your truck lit up and running and you have some sort of job for it like pushing it hard for a little while ( I don't know if you tow or anything) I'd be curious to know what kind of oil temps you see when driving in that climate. like I said you may be able to get away with 0w-40. but an oil change in a diesel is never cheap lol.i have been asking around to various service shops and they all seem to think the differing cca's dont matter. can anyone link me to some information explaining how cca effects discharge rates? thanks.