Mobil 1 98HM64 5W-40 Turbo Diesel Truck Synthetic Motor Oil - 1 Quart has been changed to item number 122253

Great diesel oil. It works great and has for approaching 200K miles. I wouldn't run anything else.

If you own a diesel pickup and want the best possible oil delivered at a good price this is your oil. I live in California and travel across country so I experience all temperature ranges. This oil has performed well in 115 degree heat as well as provided good starts at 10 below zero. Consumption is reduced and my fuel mileage tends to be a little better than most similar diesel trucks. I highly recomend this oil.[ASIN:B0033VBBYW Mobil 1 44999 5w40 Turbo Truck - 1 gallon, Pack of 2]

Have always used this oil in our Kubota tractor

Title says it all - in terms of widely distributed and reasonably priced synthetic diesel oil - this one is tops in my book. I use it in my car, my truck, and in my boat's engines with great results. The 5 quart container is great for convenience, easy to pour, great to refill with used for transport. Highly recommend!

Probably the best oil you can use. I used it on my turbo diesel jeep wrangler. I am happy with it all arround great product. Keeps a healthy engine, stayed clean at end of the interval and did not burn, cooling is optimal, stays true to its mileage. Perfect product.

Running this oil in my 2012 Porsche Boxster S. Good price and the 2 gallon pack delivered to my door is much easier than running all over town to see who has something I can use this month. I've done two changes, one at about 1400 miles and another at 5k. Mostly around town driving with a few interstate/highway sprints to neighboring towns, plus one epic 2400 mile, 11 day road trip with dear ol' Dad. Haven't had an oil analysis done yet, as the car only has 7100 miles, but she runs smooth as silk. I'm getting around 22 mpg around town, about the same as my BMW's, and just over 30 on the highway when driving at sub-ludicrous speeds.I read up on motor oils before settling on this one. One advantage to note is that this being an oil designed for diesel trucks, it didn't loose the additives that were purported to foul the catalytic converters as most automotive oils did. These additives were there to protect the valve train from wear. Do like the idea of keeping those, though I won't be able to report on the effectiveness until the car has 300k or more miles on it.The only drawback so far is that with the design of the gallon bottle, it's a bit difficult to poor into the car without spilling. This is more Porsche's fault than Mobil's. So if you're getting this for a 986 or 987 Porsche, do get a nice funnel, too.

Always used Mobile 1 motor oil in my automobiles. I have 188,000 miles on my car and when i took it in for a recall the mechanic couldn't believe the condition of the motor as it is still like new with 188,000 miles. So when I bought my Ram 1500 with an Eco Diesel engine I used Mobile 1 Diesel engine oil. Runs fantastic, gets better mileage than my 4 cylinder car!

I have used Mobile 1 Synthetics for years and have always been very happy. I use this or Rotella T6 in my GMC Turbo Diesel. The problem here is that I can buy this or the Rotella at a significantly lower cost at my local Big Box Store. This creates the conundrum of cost here vs. cost of driving to pick it up. The disparity is too large.... Still will continue to use the synthetics wherever I find the best price.