In 2002, I purchased a new Volkswagen GTI with a 200 hp 2.8 liter V6 engine. The manual advised the use of 5W-30, but preferred 5W-40. I did not live near a metro area and the only 5W-40 I could find was Rotella T. I have used this oil ever since and never had an oil related problem. The engine does not use oil, so I never have to top up between 5000 mile oil changes. I had to change the valve cover gasket recently and was pleased to find no shellacking inside the head or valve cover. What residue was there could be wiped away with a cloth.

I use this Rotella T6 in all my cars with synthetic requirement for oil. Its low weight and high viscosity - good stuff. Holds up well in my 350HP turbo application and also lasts the 7,500mi interval for my non-turbo car. I have even started trying in my motorcycle and so far seems good.

If you idle your diesel engine much this is your oil. It won't break down like a non synthetic oil and thin out. My 6.7L Cummins engine starts much easier in cold weather. It rolls over twice as easy. It snaps right off and does not drag even at zero degrees outside. It is going to help my batteries last much longer and reduce engine wear at start up. I do a oil and filter change every 5000 miles. My engine has 215,000 miles on it.

I live in South Florida. I had a timing chain rattle on my Mercedes diesel OM642 on cold startup with the recommended 0W-40 Mobile 1. Mobile 1 did not have 5W-40 for Mercedes diesel so I decided to go with this oil. My rattle is completely gone. The only downfall is I have to change it at 5k vs 10k. I am okay with that since the motor seems to be running smoother.

I am using this in my new John Deere tractor. It flows well in winter making cold starts easy. It’s is resistant to thermal breakdown as I have had this oil in my tractor long enough to see oil consumption is virtually non existent. You spend. Lot of money for a diesel so you want to make darn sure it hold up to hard use can throw at it; even with that, the oil has not changed color. Durability and longevity is what I want in my investment and Rotella will take me there!

I been running this in all my cars and trucks, ATV for many years. My 2007 Chevy Cobalt I drive the most and it has 160,000 miles and I been running this oil since 60,000 miles, starts great in Minnesota winters and I never replaced anything except brakes

My '99 Honda Valkyrie motorcycle, '02 BMW 1150GS motorbike, '91 Lexus LS400 and '04 Dodge 3500 diesel, all use Rotella synthetic. It is so nice to keep one oil for everything and still find that excellent cold weather starting and hot summer oil pressures are still great. I recommend this product without reservation.

This is a truly excellent oil that has the ratings and approvals for all my vehicles, gasoline, diesel, air and liquid cooled. Rotella T6 is the only oil I buy for my cars, trucks, tractors, ATV's, UTV's, ZTR's, gasoline and diesel powered generators, a power washer, log splitter and other small gasoline, air cooled engines, basically everything except 2-stroke gasoline engines. I love only having to buy one engine oil.

I have been using Rotella T in my Goldwing motorcycle since it was new in 1995. 225,000 miles later, no clutch problems, and my bike uses 4 oz of oil every 10,000 - 12,000 miles, when it is due for a fresh batch. I change it once a year, whether it needs it or not! Good Stuff, wish they made it in correct weights for my car and pickup. I settle for Pennzoil Ultra Full Synthetic in them, but always wish for Rotella Synthetics! I also use Rotella T in lawn, snow, and garden equipment, where heavy duty use is important. Same change intervals, once a year.

I did experience some slippage of gear / I guess my bike got spoiled by $20 -$35 a quart.. For 1/4 the price - I now can afford Shell Premium Gas prices... I use to drive 20+ miles just to save a $1 a gallon for gas. (Also, enjoyed the ride to finding these unknown -gas stations, but now that more bikers are getting killed from distracted drives - I stay off the road during heavy traffic)