Good deal on Rotella T6 - PeachParts Mercedes-Benz Forum

2.5Turbo · #1 09-07-2013, 03:25 PM

Been a while since I've been on here...finishing school, finding work...

Anyways, I got a flyer in the mail from Autozone Rewards for $8 off a 1 gallon jug and $40 off a 5 gallon bucket of Rotella T6. Shell also has a rebate going for another month or so for $5 off a 1 gallon jug and $25 off a 5 gallon bucket at Autozone. I'm not sure if the coupons are linked to an AZ Rewards account.

Shell Rotella AutoZone Fall Synthetics Promotion - Shell Rotella

With both I can get a 5 gallon bucket for $69.99 or about $13.99/gallon. Both have a limit of 2. If you want to go the gallon jug route, it comes out to about $14.99/gallon.

Perfect timing as the 300D is coming up on about 7500 miles on its oil. Unfortunately the 642 in the Jeep needs 226.51 oil for the DPF otherwise I'd be buying as much as I can

pawoSD · #2 09-07-2013, 06:23 PM

Around here autozone is super greedy and charges about $27 a gallon for T6. I can get it at the local supermarket for $19.99/gal. I've never seen a 5 gal pail of it available either....

300D-91 · #3 09-08-2013, 07:23 AM

Quote:

Originally Posted by 2.5Turbo

Been a while since I've been on here...finishing school, finding work...

Anyways, I got a flyer in the mail from Autozone Rewards for $8 off a 1 gallon jug and $40 off a 5 gallon bucket of Rotella T6. Shell also has a rebate going for another month or so for $5 off a 1 gallon jug and $25 off a 5 gallon bucket at Autozone. I'm not sure if the coupons are linked to an AZ Rewards account.

Shell Rotella AutoZone Fall Synthetics Promotion - Shell Rotella

With both I can get a 5 gallon bucket for $69.99 or about $13.99/gallon. Both have a limit of 2. If you want to go the gallon jug route, it comes out to about $14.99/gallon.

Perfect timing as the 300D is coming up on about 7500 miles on its oil. Unfortunately the 642 in the Jeep needs 226.51 oil for the DPF otherwise I'd be buying as much as I can

Nice find on the (pay it forward) rebate. Last one of those I used (Castrol) took the salesman, store manager, 30 mins and a phone call to HQ in order to use it.

7500 miles? Because your running a synthetic vs dinosaur oil? I've been changing at 3k (per the manual) regardless of oil type. The investment in oil & filters adds up

pawoSD · #4 09-08-2013, 03:40 PM

Changing synthetic at 3k is a huge waste of money and may actually do the engine more harm than good. I run synthetic about 5,000-5,500 in my older diesels and gasser. The new TDI does 10k synthetic changes.

300D-91 · #5 09-08-2013, 07:36 PM

Quote:

Originally Posted by pawoSD

Changing synthetic at 3k is a huge waste of money and may actually do the engine more harm than good. I run synthetic about 5,000-5,500 in my older diesels and gasser. The new TDI does 10k synthetic changes.

We have an 06 Jetta TDI and per the manual it gets 10K changes. Each time an oil sample is pulled and sent to the lab for analysis to ensure the oil & engine are OK.

As for the Merc, at 3K I never fear the oils useful life has been exceeded so no lab reports. However I am curious how / why changing synthetic at 3K would do more harm.

benhogan · #6 09-08-2013, 07:38 PM

Quote:

Originally Posted by pawoSD

Changing synthetic at 3k is a huge waste of money and may actually do the engine more harm than good. .

how is it harmful?

2.5Turbo · #7 09-09-2013, 02:19 AM

Book on my 1990 602 engine says 5k, presumably with the dino 15w-40 available back then. I've sent many samples to Blackstone over the years and they have said each time I could go 10k+ on the M1 or T6 synthetic based on the test results. Not as much soot load with the 60x engines and the synthetic base holds up longer. As long as Blackstone says my filtration is holding up OK, there isn't too much soot, the oil itself isn't too far out of spec and the wear metals look fine, I'm OK running long with synthetic.

For the 642 in the Jeep, MB recommends 12.5k for standard service on 229.51 spec oil, half that for heavy service (lots of towing, etc.). I'm towing about 20% of the time so I figure about 9-10k on it is about right. 229.51 oil isn't cheap (especially at 10qts) and is rarely on sale so I don't want to do it any earlier than I need to.