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Recommendation for tuned BMW N55? #5388574 03/29/20 11:15 AM
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RIPGermanCastrol Offline OP
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I picked up an M235i in January, and I tend to do my yearly oil changes (only about 7k miles per year) around April. It's a stage 1 tune with full bolt ons, so I'm looking for a stout oil to protect it. So far I've seen castrol 0w-30, 0w-40, 5w-30 (all A3/B4), Ravenol 0w-40 (pricey). What would you guys recommend?

Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5388579 03/29/20 11:22 AM
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Serge Offline
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Redline 5w/10w40. Been running that in my 600hp n54 for over 45k miles. Just change it more often (5k) if you drive it hard.

Last edited by Serge; 03/29/20 11:25 AM.

08 135i (600hp) Redline 5w40
13 X3 28i (375hp) Castrol 0w40
11 Mzd6 2.5L 10w30
14 Mzd3 5w20
16 Yukon XL 0w20
Re: Recommendation for tuned BMW N55? [Re: Serge] #5388712 03/29/20 02:30 PM
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RIPGermanCastrol Offline OP
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Okay, thanks for the recommendation. Any reason you use Castrol 0w-40 in your modded X3 but not the 135i? Just saving a bit of cash on a less demanding application?

Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5388744 03/29/20 03:24 PM
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Whenever somebody asks for a stout oil for a gasoline turbo engine, I think Redline 10w40, and Amsoil AMO 10w40.


2008 Dodge Ram 3500 diesel/G56
1985 Z51 Corvette track car 355/6-speed
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel/NV4500+GV
1972 GMC 1500 shortbed project truck 307/SM465
Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5388751 03/29/20 03:39 PM
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Serge Offline
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Reason X3 gets Castrol is because it isnt driven as hard as my 135i and also X3 gets driven more miles yearly than the 135i. The 135i gets tracktime, street shanigans and drag racing.


08 135i (600hp) Redline 5w40
13 X3 28i (375hp) Castrol 0w40
11 Mzd6 2.5L 10w30
14 Mzd3 5w20
16 Yukon XL 0w20
Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5388828 03/29/20 05:53 PM
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RIPGermanCastrol Offline OP
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Cool. I still have my 08 135i with nothing but the ppk tune, and I will fill that with Castrol 0w-40 because of its near-stock output and I’m planning to sell it soon anyway.

Two questions for you guys more in the know:
1. Is 0w going to be significantly beneficial to me in the Georgia climate compared to 5w, and the same thing for 5w vs 10?
2. Is there any general consensus of how amsoil, redline, ravenol full synthetic, and other “high end” oils stack up against each other, or would anything of those be similar to each other and a cut above stuff like M1 and Castrol?
3. What would probably be better for the engine: using Castrol 0w40 with 3k intervals or redline/amsoil/ravenol with a 7-8k interval?

Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5388938 03/29/20 08:35 PM
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edyvw Offline
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Originally Posted by RIPGermanCastrol
I picked up an M235i in January, and I tend to do my yearly oil changes (only about 7k miles per year) around April. It's a stage 1 tune with full bolt ons, so I'm looking for a stout oil to protect it. So far I've seen castrol 0w-30, 0w-40, 5w-30 (all A3/B4), Ravenol 0w-40 (pricey). What would you guys recommend?

Castrol 0W40 will do the trick, Pennzoil Platinum Euro 5W40. You are in GA, no need to pay Premium for Castrol Edge 0W30.


11' BMW 328i xDrive 6MT (Pennzoil Platinum Euro 5W40+ MANN filter)
11' VW Tiguan 2.0T (Castrol 0W30+OE filter)
15' Toyota Sienna AWD (Mobil1 5W30 EP+OE filter).
Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5388948 03/29/20 08:46 PM
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Originally Posted by RIPGermanCastrol
Cool. I still have my 08 135i with nothing but the ppk tune, and I will fill that with Castrol 0w-40 because of its near-stock output and I’m planning to sell it soon anyway.

Two questions for you guys more in the know:
1. Is 0w going to be significantly beneficial to me in the Georgia climate compared to 5w, and the same thing for 5w vs 10?
2. Is there any general consensus of how amsoil, redline, ravenol full synthetic, and other “high end” oils stack up against each other, or would anything of those be similar to each other and a cut above stuff like M1 and Castrol?
3. What would probably be better for the engine: using Castrol 0w40 with 3k intervals or redline/amsoil/ravenol with a 7-8k interval?



Unless you are running e85 tune Castrol at 7k or so is just fine. Maybe 5k if you throw in a couple track days (road course)

Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5388958 03/29/20 08:56 PM
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edyvw Offline
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Originally Posted by RIPGermanCastrol
Cool. I still have my 08 135i with nothing but the ppk tune, and I will fill that with Castrol 0w-40 because of its near-stock output and I’m planning to sell it soon anyway.

Two questions for you guys more in the know:
1. Is 0w going to be significantly beneficial to me in the Georgia climate compared to 5w, and the same thing for 5w vs 10?
2. Is there any general consensus of how amsoil, redline, ravenol full synthetic, and other “high end” oils stack up against each other, or would anything of those be similar to each other and a cut above stuff like M1 and Castrol?
3. What would probably be better for the engine: using Castrol 0w40 with 3k intervals or redline/amsoil/ravenol with a 7-8k interval?

5W is going to be good in all 48 states. So do not pay attention to that. Castrol 0W30 and 0W40 are just really good oils, so that is why people use them.
I currently sue Pennzoil Platinum Euro 5W40 in my N52, and it is smooth as silk.


11' BMW 328i xDrive 6MT (Pennzoil Platinum Euro 5W40+ MANN filter)
11' VW Tiguan 2.0T (Castrol 0W30+OE filter)
15' Toyota Sienna AWD (Mobil1 5W30 EP+OE filter).
Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5389399 03/30/20 12:21 PM
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BMWTurboDzl Offline
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Originally Posted by RIPGermanCastrol
I picked up an M235i in January, and I tend to do my yearly oil changes (only about 7k miles per year) around April. It's a stage 1 tune with full bolt ons, so I'm looking for a stout oil to protect it. So far I've seen castrol 0w-30, 0w-40, 5w-30 (all A3/B4), Ravenol 0w-40 (pricey). What would you guys recommend?


For everyday driving, any LL01. For Example: BMW TPT 5w30 or the 0w40 (LL01).


“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5389415 03/30/20 12:37 PM
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Originally Posted by RIPGermanCastrol
Cool. I still have my 08 135i with nothing but the ppk tune, and I will fill that with Castrol 0w-40 because of its near-stock output and I’m planning to sell it soon anyway.

Two questions for you guys more in the know:
1. Is 0w going to be significantly beneficial to me in the Georgia climate compared to 5w, and the same thing for 5w vs 10?
2. Is there any general consensus of how amsoil, redline, ravenol full synthetic, and other “high end” oils stack up against each other, or would anything of those be similar to each other and a cut above stuff like M1 and Castrol?
3. What would probably be better for the engine: using Castrol 0w40 with 3k intervals or redline/amsoil/ravenol with a 7-8k interval?


1. 10w is good down to -25c, 5w is -35c and 0w is good as cold as -40c, so it depends on how cold your weather can be in Ga.
2. Redline is exceptional if you want maximum protection under extreme hard use. I can’t comment on Amsoil because I’ve never used it.
3. Redline Xw30/40 depending on your oil temp, changed every 7-8k would keep that engine very clean and very happy, Castrol might struggle with the temperature in something as highly tuned as your car

Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5389440 03/30/20 01:07 PM
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Alright, I think I’ll give redline a go. Does anyone have any thoughts about the best weight for my climate (roughly 25F at the coldest of the year and 95F at the hottest), and what kind of Redline to go with? I see they have a Euro blend, but it seems marketed for diesels and cars getting European gasoline.

Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5389493 03/30/20 02:29 PM
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Ended up ordering Redline 5w-40 that Summit Racing has for a pretty decent price. The 1er will have to wait for its Castrol because Walmart won't ship the 1qt bottles and I'm sure as [censored] not going into Walmart right now LOL

Re: Recommendation for tuned BMW N55? [Re: RIPGermanCastrol] #5389981 03/31/20 07:53 AM
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Originally Posted by RIPGermanCastrol
Ended up ordering Redline 5w-40 that Summit Racing has for a pretty decent price. The 1er will have to wait for its Castrol because Walmart won't ship the 1qt bottles and I'm sure as [censored] not going into Walmart right now LOL


if it's not too late, and you live in N. Atlanta you can try Harrison's Motorsports and pick up some up if they have what you want.

Last edited by BMWTurboDzl; 03/31/20 07:56 AM.

“It took untold generations to get you where you are. A little gratitude might be in order. If you’re going to insist on bending the world to your way, you better have your reasons.”

435i
Re: Recommendation for tuned BMW N55? [Re: BMWTurboDzl] #5390122 03/31/20 11:32 AM
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Thanks for the rec, they aren’t far from me. I ordered from summit yesterday around 3:30 pm and the oil got to my doorstep before noon today. The gallon jug was $37.70 and the quart bottles were $10.40. Pretty sweet deal considering one day shipping and how much other sellers’ redline 5w40 are.

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