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#2859611 - 01/05/13 07:35 PM Shell Rotella T5 vs T6
AndyC Offline


Registered: 12/27/12
Posts: 10
Loc: California
I have a 1999 BMW M3 with a high mileage engine. It is only driven on the street but I do drive it hard some times. Right now it is using about 1 qt per 1000 miles of redline 5w30 and this is common for these engines. One of the top engine builders recommended that I switch to Rotella T5 10w40 to reduce the consumption. (I live in California where the temperature is warm) Apparently that is a synthetic blend but I would like to use full synthetic and have heard of BMW owners using Rotella T6 5w40 with good results. My oil change interval goes by the service lights which can be up to 9000 miles. Which oil would be better for me? Thanks

Andy

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#2859617 - 01/05/13 07:40 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
DemoFly Offline


Registered: 06/03/12
Posts: 910
Loc: Bremerton, WA
What's the price difference?
_________________________
Pushrods, please.

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#2859621 - 01/05/13 07:45 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
JHZR2 Offline



Registered: 12/14/02
Posts: 38890
Loc: New Jersey
T5 10w-40? Not 10w-30?

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#2859623 - 01/05/13 07:46 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
Donald Offline


Registered: 03/21/04
Posts: 17601
Loc: Upstate NY
Rotella is about $22/gallon at Walmart (no 5 QT jugs).
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#2859627 - 01/05/13 07:46 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
Thax Offline


Registered: 11/07/10
Posts: 680
Loc: VA
Rotella T6 would be better than T5 . Why not use a ACEA A3 spec oil or a BMW LL oil . Mobil 1 0w-40 or Castrol Syntec 5w-40 would be a good choice as well. If it is consuming alot perhaps Mobil 1 10w-40 High Mileage.
_________________________
97 Grand Prix GTP
11 Jetta 2.5 SE
ASE P2 Parts Specialist
AIA Import Part Specialist
KIA certified Technician

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#2859643 - 01/05/13 08:08 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
Clevy Offline


Registered: 11/11/10
Posts: 9782
Loc: Saskatoon canada
The t-5 being a semi-syn may curb consumption. I have noticed in v-twin engines that conventional oils seem to be consumed at a slower rate than synthetics.
Try it out. If the t-5 doesn't work out try the t-6
_________________________
2006 Charger RT
Miles x 2 per oil filter

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#2859672 - 01/05/13 08:30 PM Re: Shell Rotella T5 vs T6 [Re: JHZR2]
DemoFly Offline


Registered: 06/03/12
Posts: 910
Loc: Bremerton, WA
Originally Posted By: JHZR2
T5 10w-40? Not 10w-30?

Rotella T Triple Protection is the 10w-30 flavor.

T5 is a 10w-40 semi-syn.
_________________________
Pushrods, please.

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#2859680 - 01/05/13 08:36 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
JHZR2 Offline



Registered: 12/14/02
Posts: 38890
Loc: New Jersey
I own a gallon of T5 semi-syn 10w-30.

There is a rotela 10w-30, but also a T5 version...

Ive not personally seen T5 10w-40. Im not denying that it exists...

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#2859691 - 01/05/13 08:41 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
AndyC Offline


Registered: 12/27/12
Posts: 10
Loc: California

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#2859693 - 01/05/13 08:43 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
gregoron Offline


Registered: 11/08/12
Posts: 668
Loc: Hawaii
I would go T6 5W-40 with OEM oil filter and drain plugs. I stress importance of OEM filter. Check your PCV valve as well and air filter.

If that doesn't work, do same as above but instead get Maxlife blend or synthetic 10W-40.
_________________________
2014 VW Jetta GLI, 6MT, 16k miles.
M1 0W-40, 8k mile OCI

1995 MB E320, 4AT, 221k miles.
M1 0W-40 (next OCI)

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#2859697 - 01/05/13 08:47 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
AndyC Offline


Registered: 12/27/12
Posts: 10
Loc: California
Yeah I always use oem filter adn coolant. My pcv (oil separator) is leaking a bit so Ill replace that to help the consumption. Air filter is new. Apparently Rotella T5 and T6 works well for these engines given what they say on the BMW forums but I'd like to find out which would be optimal. I always lean toward full synth.

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#2859710 - 01/05/13 09:00 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
bigjl Offline


Registered: 09/06/12
Posts: 1922
Loc: London, England
My Taxi has just gone past 180k miles and the OCI before this one was Maxlife Diesel10w40 synth blend.

I know this is not a similar engine but it hardly used half a litre in the OCI, which was at least 8k miles, 50/50 dual carriageway and harsh urban Taxi work.

Didn't stop me going for Mobil 1 0w40 (SN/SM) New Life this time though!

I will say I had oil consumption issues on Mobil 1 0w40 many years ago in a high mileage Omega which had the 2.5 BMW 6 cylinder Diesel engine, this was almost stopped by switching to 5w40 Comma Syner D.

I would try the fully synthetic Maxlife perhaps, but I would shy away from using Mobil 1 just in case the oil use was to increase.

The Clio (also on Maxlife Diesel 10w40) has still not needed any top ups since the episode when the oil light came on, so I suspect that was just the result of a long journey and perhaps a sensor issue, pity I wasn't there to see exactly how much oil was out in and what the dipstick level was.

Or the wife might have got the warning lights mixed up!
_________________________
14 Picanto 1.0 City 23k Castrol Magnatec 5w30 A5/B5 SN
07 Berlingo 1.4i 44k 10w40 Petronas EU800
05 Picanto 1.1 LX 139k Castrol Magnatec 5w30 A5/B5 SN

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#2859711 - 01/05/13 09:02 PM Re: Shell Rotella T5 vs T6 [Re: JHZR2]
Clevy Offline


Registered: 11/11/10
Posts: 9782
Loc: Saskatoon canada
Originally Posted By: JHZR2
I own a gallon of T5 semi-syn 10w-30.

There is a rotela 10w-30, but also a T5 version...

Ive not personally seen T5 10w-40. Im not denying that it exists...


I've seen it. It does exist,but not very common
_________________________
2006 Charger RT
Miles x 2 per oil filter

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#2859807 - 01/05/13 10:38 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
KCJeep Offline


Registered: 06/30/11
Posts: 6489
Loc: Mahzurrah!
Tractor Supply carries T5 in 10w40, but if you're going to run a HDEO 40 weight I'd opt for the T6 between the two I believe.
_________________________
2004 Jeep Grand Cherokee 4.0 @ 137k
Castrol Edge 0w40 w/ 1 qt 0w20 - Fram TG16
KIA Sedona 66k, Ford Focus 119k, Chrysler Concorde 120k, Mazda 6 113k

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#2859837 - 01/05/13 11:06 PM Re: Shell Rotella T5 vs T6 [Re: AndyC]
AndyC Offline


Registered: 12/27/12
Posts: 10
Loc: California
So despite being 5w should the T6 be the same viscosity when hot due to being synthetic? The thicker oil should help my engine seal.

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