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By Grumpy Bear · Posted
In their own words: https://blog.amsoil.com/how-engine-sludge-forms-and-how-to-prevent-it-2/ [Quote] Synthetic Oil Helps Prevent Sludge Fortunately, sludge and varnish deposits are something that can be controlled. Using thermally stable synthetic base oils reduces the rate of degradation (oxidation). Antioxidant additives further help reduce the rate of degradation. One of the most widely used is zinc dithiophosphate. Not only is it an excellent oxidation inhibitor, but it is also an outstanding anti-wear additive. High-Quality Additives Fight Sludge Fortunately, it is possible to address many of the issues that occur after the initial oxidation stage. Additives, such as detergents and dispersants, help promote the suspension of contaminants within the oil and keep them from agglomerating. Detergents, which are also alkaline in nature, assist in neutralizing acids generated in the sludge-building process. Antioxidant, dispersant and detergent additives are consumed during use. To achieve maximum life expectancy, use a motor oil with high concentrations of antioxidant, dispersant and detergent additives. [End Quote] So quality base oil and then the last sentence above. TBN and ZDP levels matter. The one thing not covered was sufficient viscosity. Sad. And yet we now have since API SN lower amount of them all with the only real change being a slight up tick in base oil selection. Along with lower concentrations of everything that makes oil work and lower and lower viscosity there is still an insistence on longer OCI's. How low does the peanut butter and jelly level have to get before we say it's just white bread folded? The new smoke and mirror treatment is the 'additives are INVISIBLE' to UOA testing with a health dose of TRUST ME. I'm not picking on AMSOIL. This is coming from all of them. Every last one of them that abandon the low wear model in favor of the high mpg/EPA compliance model. -
First off use it in the way you’re more comfortable. In working in off road situations most of my life I used 4WD low range very little. In most cases when equipped I used auto 4WD. If I wanted maximum control going up and down very steep terrain I used low range. Especially if I was driving a diesel. Same with very rutted terrain. In very muddy or snowy conditions I wanted momentum so high range worked well for that. With gravel ramps with limited traction I would try high range first. I would want smooth even increasing speed if I was fighting traction. Low range could give you too much to the wheels breaking traction trying to move. -
Having owned 4wd vehicle since the 1970s I find there are varying opinions on how to use 4wd, every owner is an expert in their minds. IMO, 4LO is the appropriate gear and what I would use, You have to feather the gas to avoid spinning tires and the lower the gear the better chance. But like I said you will find those that think their method is best. I live near a boat launch. Yesterday there was a new Ford Maverick pulling out a pontoon boat almost 2x its size, they had no problems and they don't have a LO range. True story. One winter day not long ago I was coming out of small town post office and there was a F150 4wd parked in front and was stuck foot deep snow ruts. I knew the lady so I asked her to put it in 4wd (wondering why in the middle of a 2-day snow storm she wasn't). Her reply surprised me, "my husband" (the expert) told me not use that because it uses too much gas. She finally got unstuck spinning in 2wd which likely used more gas than not. -
Your tire pressure issue may just be batteries, you can reset them using tge Ing switch (I think) and the owner's manual. ChatGTP will b e a faster, better help than Google. -
By Another JR · Posted
The thinking is that starting out in a higher gear makes it easier to avoid applying excessive torque when pressing the gas pedal. In a modern 4wd truck with 4 low and a limited slip or locking rear end, I would use 4 low and try to crawl up the ramp. Sometimes if they are too slippery, you have to back up to let the boat have some bouyancy, and then accelerate briskly to get some momentum to help you pull the through the slippery parts.
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