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I picked up 4 gallons of Delo 400 XLE 10w30 diesel oil a few months ago, with plans on using it in a vehicle that has now been sold. What are the chances it could be used (effectively) in a '91 Mazda B2600I 2.6L fuel injected 4 cyl? If not the Mazda, maybe a '94 4.0l Jeep 6 cylinder?

Recently picked up a '75 Jeep CJ5 with an AMC 304 V8. This is my first AMC engine, and first V8 in a Jeep. Speedometer has been changed out to a newer model, so I have no idea the mileage. Any suggestions on an engine oil and weight?

I recently picked up a 1984 medium duty GMC 70 Topkick/Kodiak truck, with a GM 366 gas engine and 5spd manual trans with 2-spd rear end. I need to change the oil in the truck, but I have had a little difficulty finding the recommended oil and actual capacity. Any suggestions?

I have a '91 Mazda B2600i 4x4 with manual 5-speed that has gone neglected too long. I recently got my MaxJax 2-post lift installed, so it has motivated me to give the truck a little TLC. First thing I want to go is change out the oil in the transfer case and transmission, but I am having trouble...

I recently picked up a neglected/abandoned Warn X8000i, and I am in the process of rehabilitating it to be used on a Jeep and with my equipment trailer. It had spent most of its life uncovered on the front of a car trailer, and was recently stuck in a utility building and forgotten. When I...

Recently picked up a 2007 Ford F550 with the 6.0L diesel, and I need to do an oil change. Mileage just hit 80k, but I am not sure what the previous owner was using. I will likely go ahead and do an oil analysis, as it would be interesting to see the results. Temps here in Georgia are relatively...

I'm getting ready to change the transmission fluid on a '94 Jeep Wrangler. This particular Jeep is a 6cyl with the AX-15 5spd manual, and I doubt the fluid has ever been changed (150K+ miles). The service manual calls for 75w-90, but it looks like the new standard is to use plain old 10w30...

I am getting ready to do the 350hr service on my Kubota L4330, and I am curious if there is an equivalent to Kubota's SUDT or UDT hydraulic fluid that I can purchase locally. I have been told that Shell Donax TD is an acceptable substitute for UDT, but cannot find confirmation. The tractor does...

I just picked up a '97 Land Rover Discovery SE, and I am trying to determine which oil to use. I am not familiar with the vehicles history or maintenance schedule, so I'd like to start of fresh. The engine is a 4.0L V8 with 175k miles, and runs pretty strong. It seems like 5w-40 or 10w-40 is...

I have a '91 Mazda B2600i 4x4, 225k miles, with what sounds like a slight lifter tap on start up (typically lasts until warmed up). Its had this noise off and on for as long as I can remember (I've owned the truck since '98), and I've been using dino 10w-30 with SuperTech filters. Am I better...

I have an '02 VW Jetta with the 2.0L 4 cylinder, and I've had the car for just over a year. Throughout this time, the temp gauge has pretty much remained bottomed out. Very rarely, it will sneak up to 190ish degrees for a little while (less than a couple of minutes), and go back down again. It's...

I have a few vehicles that I drive on a regular basis. As such, none really get a lot of mileage over a 12 month period. For example, the two vehicles I drive the most managed 5300 and 4200 miles respectively in 11 months. My hunting truck may have managed 1000 miles, if that, in the same amount...

I have an '02 VW Jetta that needs the transmission fluid checked, and possibly changed. Problem is, these cars have a sealed transmission (and no dipstick for fluid check). Anyone changed out the fluid on a Jetta, and where are they fill and check plugs located? Thanks!

All right oil guys, need some major help here. I recently bought a '95 Jeep Wrangler YJ with the 2.5L 4 cylinder and 154k miles. The engine has an oil leak around the valve cover, so I pulled the cover today to replace the gasket. What I found underneath has to be the worst buildup of sludge I...

Quick question. I once say a list that rated oil filters, but cannot find it now. Anyone have a link to it, and where do SuperTech filters place? Thanks!

Are there really any differences between marine rated 2-cycle oils and the 2-cycle stuff you'd use in a weedeater or chainsaw? I have around 7-8 pieces of 2-stroke power equipment (chainsaws, trimmers, etc)and two boats, so it would nice to be able to buy in bulk and use one oil for all of them...