great mpg w new oil
Thread Starter
Super Member
Joined: Jul 2004
Posts: 523
Likes: 4
From: NE. TN
06 C350 sport 6MT
great mpg w new oil
i drove 500 miles to visit family in virginia, radar detectors are illegal and speed limit is 65, so drove 73 mph, got 33.5 mpg w royal purple 5w30 in c350 2006 sport 6mt. at 350/gal im stayin w this OIL
Newbie
Joined: May 2008
Posts: 12
Likes: 0
From: WI
2004 C-230
Out of curiosity, this statement has no meaning unless you have some comparison data...what oil were you using before? How much improvement from the last time you made the exact trip at the same speed, temps, etc. with the previous oil?
Thread Starter
Super Member
Joined: Jul 2004
Posts: 523
Likes: 4
From: NE. TN
06 C350 sport 6MT
dude, 33.5 mpg from a 3.5l motor is great in any setting, my car is rated at 29 mpg hiway, just thought other s might like the data. havnt had the car long enuf to compare vs standard mobil 1, but others w/ this car who use mobil 1 may want to chime in and compare mpg.
Last edited by mlg; Aug 9, 2008 at 10:53 PM.
MBWorld Fanatic!
Joined: Nov 2007
Posts: 2,078
Likes: 4
From: NYC
2012 C300 4Matic
Please don't think I'm trying to discredit you, but this sounds extremely unlikely.
I hope it's true because that would be great! But I really doubt it. Unless someone can prove this scientifically I'm going to stick to Mobile 1.
I hope it's true because that would be great! But I really doubt it. Unless someone can prove this scientifically I'm going to stick to Mobile 1.
MBworld Guru
Joined: Apr 2002
Posts: 22,058
Likes: 18
From: Diamond Bar, CA
W206 PHEV AMG
maybe the car was dying for an oil change to begin with, so you saw what you can normally achieve with new oil.
didn't know the C350 hwy was rated at 29. I thought they were the same as the new one. my 204 is only rated at 25 although on the hwy going 70mph can achieve 28mpg. once broken in it should be even better.
didn't know the C350 hwy was rated at 29. I thought they were the same as the new one. my 204 is only rated at 25 although on the hwy going 70mph can achieve 28mpg. once broken in it should be even better.
Super Member
Joined: Jun 2008
Posts: 947
Likes: 0
From: Las Vegas, NV
I drive a Toyota Hybrid...
Trending Topics
Member
Joined: Jul 2006
Posts: 182
Likes: 0
From: St. Louis, MO
02' C240 Luxury Model
Yah, and Mercedes said I had to change my transmission, torque converter, and radiator...so I changed out my radiator myself and fully flushed the transmission and the problems and cels went away. In other words..the factory doesn't always know best...trust me, I've been working on assorted cars now for over 20 years.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Thread Starter
Super Member
Joined: Jul 2004
Posts: 523
Likes: 4
From: NE. TN
06 C350 sport 6MT
jonan, roy purp is not an approved mb oil, u are right, rp has never applied for this designation w mb, im sure that if they tried, rp would pass w flying colors, trust me, if i ever have oil related failure , ill drain the rp out and replace w good ole mobil 1. until then , i think im savin at the gas pump.
Member
Joined: Apr 2008
Posts: 213
Likes: 2
97 S600 coupe/gf 16 C300 Lux. Former: 08 GL450, 83 300D, 97 C230, 08 c300 luxury, 92 500SL, 93 400E
Not unlikely/a surprise at all. I have the same car (luxury) with a 7spd auto, and I have seen 34.7 on a 2-lane road trip, 120 miles not going over 60mph, and no AC. With skinny 205 series tires, and 1800rpm at 60, it's easy. And that's with 40-weight oil, but again, an extra gear
