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Any small inexpensive mods for a 4.0l 1993 Ranger OHV?


It depends on the synthetic oil. The cheaper stuff tends to be super refined petroleum oil. The more expensive stuff is made from something else like natural gas.

Either way, it can be taken to the auto parts store recycling. They will accept it.

As far as efficiency, there is some gain but generally not enough for the average person to notice a difference. The inside of the engine will be cleaner. The cheaper stuff will still leave some varnish but none of the black gunk that regular petroleum oil can leave. The more expensive stuff, like Amsoil, will leave the inside of the engine looking brand new.

I found this out when doing valve lash adjustments on the Hondas I used to own. The top of the cylinder head was a night and day difference in cleanliness after switching to synthetic.

The biggest reason I don’t use Amsoil anymore is cost. There is a big difference between maintaining one vehicle and three. A fourth may be in the fleet soon. So, cost is a big factor.

There is nothing wrong with using conventional motor oil and a good filter as long as you keep up with the maintenance. So, switching to synthetic is a decision the individual has to make. Taking advantage of the oil change specials the auto parts stores offer helps take some of the sting out of it. But the vehicle is generally designed with conventional lubricants and will function just fine with them for a long time.

The only exception I can think of is the Mercon V, Mercon LV, and Mercon ULV transmission fluids. As far as I’m aware, those are all synthetic.

Me personally, I run all synthetics. Engine, axles, brake fluids, etc. Has it made a difference in fuel economy? Not that I can tell. Longevity, maybe but I can’t prove it.
 
Explain yourself.

The girlfriend’s daughter may be getting a vehicle soon. I’m sure it will be new to her and I will have to go over it with a fine toothed comb to find all the ignored and neglected issues it will have. Her father is working with her on it. I’m sure whatever they get will be thrown into my lap to maintain.
 
The girlfriend’s daughter may be getting a vehicle soon. I’m sure it will be new to her and I will have to go over it with a fine toothed comb to find all the ignored and neglected issues it will have. Her father is working with her on it. I’m sure whatever they get will be thrown into my lap to maintain.


That's not nearly as exciting as I was hoping for.. gotta say 😋 good luck though!
 
That's not nearly as exciting as I was hoping for.. gotta say 😋 good luck though!

I’m not looking forward to it. Her father likes GM and whatever they are calling Chrysler products these days.
 
If you’re looking for the best bang for your buck, a custom tone is the way to go. I have an SCT X4 handheld tuner with custom tones from 5-Star tuning and I love it. Really wakes up the truck! Of course NO2 is always an option. I have a $300 dry fogger 75Hp shot that REALLY wakes it up! I use it very sparingly. Cost me $91 to fill the bottle now!
 

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