|
|
10-05-2015, 05:00 PM | #1 |
Captain Fatbelly
1439
Rep 1,994
Posts |
Redline 5w50
Search didn't turn up much...just wondering if anyone is running it and if so, impressions? Looks like a good add-pack and the viscosity is ideal for what I am looking for. I was thinking of running a 50/50 blend of it and rl 0w40 in the winter and just straight 5/50 in summer.
__________________
2013 c63 Amg coupe p31, v7 tune, plm headers, armytrix downpipes, EflexFuel
2008 dct coupe, evolve engine/dct tune, ttp, ms intake, megan exhaust, cf ds. Sold. |
10-05-2015, 06:47 PM | #2 |
Retired Curmudgeon
3129
Rep 4,227
Posts |
I'm interested in this too. (sorry Doc, no help...)
__________________
'19 X3 M40 Carbon Black/Oyster, '21 X7 40i AW/Black, Past BMWs: '18 M550i, '18 330 GT, '16 X5 40e, '11 E90M3, '06 X5 4.4, '03 330i ZHP, '02 M3, '97 Z3 2.8, '95 M3 (2x), '94 530i (manual), '92 525i (manual), '88 M3, '87 325iS |
Appreciate
0
|
10-06-2015, 09:35 AM | #4 |
Captain Fatbelly
1439
Rep 1,994
Posts |
Thanks. I'm trying to find an oil with more cold flow than tws but still thick enough to keep things relatively quiet once hot. Currently running out euro 5/40 and it is a bit noisy once up to temp. Any experience sith either oil? After doing some research last night it seems that RL oxidizes pretty quickly and the tbn drops faster than most other oils which is putting me off a bit.
|
Appreciate
0
|
10-06-2015, 09:46 AM | #5 |
Captain
388
Rep 876
Posts |
FWIW, RL isn't that well received over at bob is the oil guy forums.
Why not mix the BMW 0w40 with the BMW 10w-60? You should be able to custom blend what you're looking for. |
Appreciate
0
|
10-06-2015, 01:16 PM | #6 | |
Lieutenant Colonel
234
Rep 1,673
Posts |
Quote:
Mix 0-40 and 15-50 if you want. Wouldn't mix the 10-60 with mobil
__________________
Electronics Junkie, Engine Builder.
|
|
Appreciate
0
|
10-06-2015, 01:18 PM | #7 |
Captain
388
Rep 876
Posts |
|
Appreciate
0
|
10-06-2015, 01:24 PM | #8 | |
Major
314
Rep 1,018
Posts
Drives: 2010 E92 M3 6MT
Join Date: Apr 2013
Location: Mississippi
|
Quote:
__________________
4.4L LC stroker/ESS VT2-625/Volk te37 sl's/AA exhaust/DSS Carbon Fiber driveshaft/ARH Headers.. etc |
|
Appreciate
0
|
10-06-2015, 01:31 PM | #9 |
Lieutenant Colonel
234
Rep 1,673
Posts |
The bmw is the same as Pennzoil ultra 0-40. You are correct not so much brands but base stock mixing is the real issue.
__________________
Electronics Junkie, Engine Builder.
|
Appreciate
0
|
10-06-2015, 01:53 PM | #10 |
Captain Fatbelly
1439
Rep 1,994
Posts |
It does warm up quicker and the car runs much better cold, no bucking or surging, but once it's hot, there's a lot more engine noise. You can't hear it from inside the car at all, and even at idle it isn't bad, but in a tunnel under load it's much louder now than with 10/60. I run the same set of tunnels quite often and am pretty tuned into the sound.
__________________
2013 c63 Amg coupe p31, v7 tune, plm headers, armytrix downpipes, EflexFuel
2008 dct coupe, evolve engine/dct tune, ttp, ms intake, megan exhaust, cf ds. Sold. Last edited by Doc Oc; 10-06-2015 at 02:09 PM.. |
Appreciate
0
|
10-06-2015, 01:54 PM | #11 |
Captain Fatbelly
1439
Rep 1,994
Posts |
Yeah I know.....oxidation issues and wear metal increases....they go back and forth....not sure what to believe. Good tip on the bwm 0w40.
__________________
2013 c63 Amg coupe p31, v7 tune, plm headers, armytrix downpipes, EflexFuel
2008 dct coupe, evolve engine/dct tune, ttp, ms intake, megan exhaust, cf ds. Sold. Last edited by Doc Oc; 10-06-2015 at 02:09 PM.. |
Appreciate
0
|
10-06-2015, 02:01 PM | #12 | |
Captain Fatbelly
1439
Rep 1,994
Posts |
Quote:
Is the bmw 0w40 and 10/60 the same base stock? I like that option better.
__________________
2013 c63 Amg coupe p31, v7 tune, plm headers, armytrix downpipes, EflexFuel
2008 dct coupe, evolve engine/dct tune, ttp, ms intake, megan exhaust, cf ds. Sold. Last edited by Doc Oc; 10-06-2015 at 02:10 PM.. |
|
Appreciate
0
|
10-06-2015, 05:09 PM | #13 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
It's not that people don't like it, it's just that it's seen as an older chemistry that some think has since been surpassed. Note all of the subjective/opinion words in my previous sentence. It still has an objective/proven track record despite being "older". I'd probably go for Red Line's 5w40 over the 5w50 simply because its operational viscosity (HTHS) of 4.4 is fairly close to what TWS shears down to. The 0w40 isn't bad either. Only way to know for sure would be to check oil pressure in operation and sample the oil. Not to throw a wrench into things, but have you considered any of the Renewable Lube stuff? Also a group V-heavy basestock (plant esters) with impressive VI and modern add pack. I used to run their 0w30 in my Audi and was quite impressed with the analysis reports it generated. They do have a 5w40 that's quite stout and was initially developed for the Audi RS4.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
0
|
10-06-2015, 06:13 PM | #14 |
Lieutenant Colonel
170
Rep 1,792
Posts |
Doc, M1 5W50 from Amazon.com if PU 5W40 is not meeting your motoring needs. But a spread like that is going to shear just like TWS.
NAPA here in So. Cal also stocks M1 5W50. |
Appreciate
0
|
10-06-2015, 06:40 PM | #15 |
Captain Fatbelly
1439
Rep 1,994
Posts |
I did check out R. Lube but the hths on the 5/40 was 3.7 which is pretty similar to what I'm using now, but thanks for the suggestion. I'm not set on redline, they just have the thickest 0w40 I have seen. I'm really trying to experiment with some different viscosities to see what, if any effect it might have on my annoyingly loud cold start rattle and operating noise. I think/hope a 0w will pressurize the system quicker and help with the noise but I'd like something a little thicker than m1 which I've seen on uoa's as thin as 11.x at 100c. Redline is in the 14 range, a little closer to tws but still with the cold flow benefits of a 0w. Is there any other 0w40 out there as thick?
Last edited by Doc Oc; 10-06-2015 at 07:00 PM.. |
Appreciate
0
|
10-06-2015, 06:57 PM | #16 |
Captain Fatbelly
1439
Rep 1,994
Posts |
Thanks. I thought about that but thought I read here that it wasn't a great option for our engine? Or am I mistaken? UOA looks pretty good on it....nice additives, shears down to a 40 (14.43 cst)... is there any reason more people aren't running this?
|
Appreciate
0
|
10-06-2015, 08:10 PM | #17 |
Lieutenant Colonel
170
Rep 1,792
Posts |
I guess you gotta ask yourself, why is thicker oil needed?
You are using the very same PU 5W40 that's factory fill for cars like F430/Scuderia/458 Italia/488GTB...which all rev higher (except 488) and produce more hp per liter. Did you know M1 0W40 is the factory fill for McLaren MP4-12C and 650S? Why didn't McLaren choose something thicker for their exotics? They don't care about reliability? |
Appreciate
0
|
10-06-2015, 08:43 PM | #18 |
Captain Fatbelly
1439
Rep 1,994
Posts |
The difference is, none of those cars are spec'd for 10w60. They are using the proper, factory recommended fill. We are not. I'm not worried about not being protected by 5w40, most of the cars I've had used a 30 or 40 and some made over 600 hp. I just wonder why BMW specifies such a heavy oil and what are the ramifications, if any, of going lighter? Everyone jumped on the 0w bandwagon out of bearing failure fear, but I have never seen a serious discussion of what unintended consequences may arise from putting in a much thinner oil. There has to be a mechanical reason BMW specs tws.
Last edited by Doc Oc; 10-06-2015 at 08:56 PM.. |
Appreciate
0
|
10-08-2015, 09:09 AM | #19 | |
Stop the hate, get a V8
3858
Rep 8,625
Posts |
Quote:
Kinematic viscosity at 100 C is not the best figure for approximating operational viscosity. The oil might be at that temperature in the sump, but in places like the bearings it will be far warmer. Use the HTHSV to compare operational viscosity. That being said, here are some 0w40 HTHSV numbers: Red Line: 4.0 Mobil 1: 3.8 Pennzoil Ultra: 3.7 Liqui-Moly Synthoil Energy: 3.6 Royal Purple: 3.6 Motul 300V: 3.9 You want as thin as possible, but as thick as necessary. Without an oil pressure gauge, it's just going to be an educated guess.
__________________
Now: 2017 Corvette Grand Sport, 2021 AMG C63 S sedan
Past: 2011.5 M3 sedan ZCP |
|
Appreciate
0
|
10-08-2015, 11:10 PM | #21 |
Lieutenant
30
Rep 521
Posts |
Been on the 5w50 fit the last two years. My blend of Redline 10w60 and 5w40 gave a better UOA, but that may have been due to improvements in my track driving style (I.e. Pushing the car harder)
|
Appreciate
0
|
10-12-2015, 12:12 AM | #22 | |
Brigadier General
573
Rep 3,741
Posts |
Quote:
Not sure if it's worth all the fuss, but was hoping it might give a little extra protection when tracking, especially given the heat out here lately. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|