Skip to main content

Site Navigation

Your Account

Choose Language

Has anyone switched to Rotella T5?

I was wondering if anyone had switched to Shell Rotella T5 10W-30 Synthetic Blend. If so, what year engine do you have, what did you switch from, and what are the results. I am thinking of switching. I have a 2005 KW with a Cat engine with 1,120,000 miles on it. I have not had it rebuilt. I run Shell Rotella Triple Protection 15W-40 now and get 7mpg.

Thank you.

Answer this question I have this problem too

Is this a good question?

Score 1
Add a comment

10 Answers

Most Helpful Answer

'''I was using Rotella T with not quite as many miles on my motor as you have but I started using a little oil and switched to Mystic 15w/50 synthetic blend and stopped my oil consumption and got another 200,000 mile out of it.

Since then I have rebuilt my motor and stayed with the Mystic and have had great service out of it. I would think that with over a million miles I would go up on the viscosity not down. 'italic text''

Was this answer helpful?

Score 1

Comments:

Mystik is a really great oil. And it can be had at some pretty attractive pricing at farm and home type of outlets. The Mystik JT-8 semi synthetic 15w40 I have bought before was well under Wally World pricing on the bigger name brands.

by

Add a comment

I realize my response may not be completely relevant but I have switched to rotella 5w40 in my ford pickup. What an amazing difference in cold weather starting, performance, and fuel economy. As soon as I can scrape together enough money to buy the ops eco-pur I'm going to switch to rotella 5w40 in my old ddec3. Hope this helps.

Was this answer helpful?

Score 0
Add a comment

Ken, the price of the EcoPur is very negotiable. When I called Artie, he started out at a price of $1200, I got it for a little over $600. Also, they have a payment plan that makes it very easy to get.

Was this answer helpful?

Score 0
Add a comment

I have 750000 I tried but oil consumption went up. When I do the inframe I will try again. I hope I can get a million on my 05 C-15.

Was this answer helpful?

Score 0
Add a comment

Is not 10w-30 to thin when hot and not in oil spec for a truck engine. I use rotella T6 5w-40 only $22 a gal at wal-mart

Was this answer helpful?

Score 0

Comments:

Yes 10W/30 is only good to ambient temp of 90 degrees

by

Add a comment

I'm testing Delo 5w30 now. Only 1500 miles into the test. Noted so far on a 1998 M11 cummins is a minor increase in a oil leak. Oil pressure is only 2 lbs lower. Consumption rate not identified yet.

Also note this engine runs Evans coolant with a 230F fan on setting, so 2 lbs is very reasonable.

I had a previous experience with rotella 5w40 that caused blowby on the air compressor , and oil out the dryer. I stopped the test then. 2 years later , a new air compressor, and I'm back in test mode again.

I'd think yours is a bit high mileage to try, but it really depends on ring seal, not mileage.

Was this answer helpful?

Score 0
Add a comment

I have beem using the T5 for 25000 + miles. I have an 01 C12 cat 908k miles. I have used 3 gal in those miles about the same as tne T6. Xampling is normal fust some fuel dilution issues not oil related.

OPS may have a MATS show special too.

Was this answer helpful?

Score 0
Add a comment

I thought about this for awhile recently when I had my overhead done and an A service on new years At about 825000. I switched from T3 rotella to a 10w 30 FULL synthetic delo. I figured why go half way with a blend? Not that difficult to find just call delo for a supplier near you. One reason I switched was cold weater starts and battery with my wabasco/battery issues it starts right up now nice and easy this winter I love it. Not sure about the MPG To early to tell if I'm burning more or not either. I think the burn is the same or less than Also get OPS to save between oil intervals

Was this answer helpful?

Score 0
Add a comment

I ran standard Delo 400 LE 15w40 in my Detroit since I bought it. Have quite a few oil samples done on the stuff. For the last two oil changes, I used Delo full synthetic 400 LE 5w40. After running the samples on this stuff, I just went back to the conventional Delo. I noticed zero improvement of mpg, almost identical wear number rates on oil samples, almost identical TBN depletion rate also. Absolutely no benefit whatsoever. If the numbers are not there, it just seems stupid to throw more money away.

Was this answer helpful?

Score 0
Add a comment

Well, my oil supplier has finally pulled my leg hard enough to get me to go with a 10w30 syn blend at my next oil change. I have 466,000 miles on a factory rebuilt pre-EGR Series 60. It only uses about 1/2 gallon in 25,000 miles, so I figure it is still nice and tight for the 30w. The Detroit Lube manual has a 10w30 as a recommended viscosity in everything that Detroit makes. Will see how it does.

Was this answer helpful?

Score 0
Add a comment

Add your answer

Donnyjones will be eternally grateful.
View Statistics:

Past 24 Hours: 6

Past 7 Days: 27

Past 30 Days: 90

All Time: 10,434