5W-50 Recommended by TroyJeup

macdude357 wrote

The HTHS viscosity is 4.4 for the M1 oil which is quite a bit lower than either the Redline (5.0) or the Castrol 10w60 (5.6). Have any of you done any oil analysis to see if there is any engine wear with those oils? I've been using Ravenol 10w50 (5.4) and haven't seen any signs of engine wear in my Blackstone reports.

Lots of people run LM 10w60 and it has an HTHS of 3.5 IIRC.

Cheers,

Scharbag wrote

Lots of people run LM 10w60 and it has an HTHS of 3.5 IIRC.

Cheers,

LM 10w60 is not 3.5, it's probably 5.3. Many manufacturers simply print ">3.5" for any of their 40-weight and heavier oils.

dparm wrote

LM 10w60 is not 3.5, it's probably 5.3. Many manufacturers simply print ">3.5" for any of their 40-weight and heavier oils.

Well that makes sense. And seems silly of them.

Thank you for clearing that up - it seemed very odd given LM has a high viscosity.

Cheers,

macdude357 wrote

The HTHS viscosity is 4.4 for the M1 oil which is quite a bit lower than either the Redline (5.0) or the Castrol 10w60 (5.6). Have any of you done any oil analysis to see if there is any engine wear with those oils? I've been using Ravenol 10w50 (5.4) and haven't seen any signs of engine wear in my Blackstone reports.

I couldn't find the Castrol's HTHS specs in their datasheet, where did you find that?
I've been trying to find out how the Castrol compares to Mobil 10w-60 I can get here in the UK. The Mobil's HTHS is 5.7.

330indy wrote

Red Line 11604 5W50 Motor Oil, 12 Pack

Still going strong.
https://www.amazon.com/dp/B005JVEQFU/ref=cm_sw_r_em_api_glc_fabc_3ST95740ZPY2X88J2ZG6

macdude357 wrote

The HTHS viscosity is 4.4 for the M1 oil which is quite a bit lower than either the Redline (5.0) or the Castrol 10w60 (5.6). Have any of you done any oil analysis to see if there is any engine wear with those oils? I've been using Ravenol 10w50 (5.4) and haven't seen any signs of engine wear in my Blackstone reports.

I've done Blackstone analysis on Mobil 1 0W40 alone, 0W40 mixed with 15W50 and both did great after around 7,500 miles and 2-4 track days.
I was a little worried about the 0W40 after 2 track days but it was fine.
They said I could go 10,000 miles and should be fine.
.

Yes, a lot of people overthink the oil. For most driving, the car would be fine on any 0W40, 5W40, 10W40, 5W50, or 10W60 synthetic.

pbonsalb wrote

Yes, a lot of people overthink the oil. For most driving, the car would be fine on any 0W40, 5W40, 10W40, 5W50, or 10W60 synthetic.

I made this argument on an E9x M3 Facebook group and it was not well received.

0w40 to 10w60 is just fine for the S65 for daily use. Perhaps there is a benefit at a hot racetrack to run 10w60 but if that were the case, why does the Porsche GT3 come with a 0w40 factory fill?

Scharbag wrote

Perhaps there is a benefit at a hot racetrack to run 10w60 but if that were the case, why does the Porsche GT3 come with a 0w40 factory fill?

Because it was designed around that oil, much like the S65 was designed around 10w60.

There is still an element of marketing behind it...the divorce of BMW and Castrol was a huge deal.

The S65 designed for 10w/60? Maybe that was their intent but it didn't work out well!

Scharbag wrote

I made this argument on an E9x M3 Facebook group and it was not well received.

0w40 to 10w60 is just fine for the S65 for daily use. Perhaps there is a benefit at a hot racetrack to run 10w60 but if that were the case, why does the Porsche GT3 come with a 0w40 factory fill?

Depending what is intended KV100 that BMW wants oil to have after 10-15k? 10W60 will shear down probably to light W50 after 10-15K, if not mid-heavy W40.
I personally would run Redline 5W50 or Motul 5W50 Sport, and change after 5-7.5K.

Did my first change with Redline 5W50. Does warm up a bit faster. Very smooth as well.

Redline probably performs at its best when used from new (after breakin) in an engine with healthy seals.

Nowadays I stop worrying about it and just use BMW TT 10W60 with Ceratec/MoS2.

What is the logic behind mixing different oil weights/brands?

SilverSlug wrote

What is the logic behind mixing different oil weights/brands?

If an oil is API certified, it is safe to mix with any other API oil. Why mix? Good question.

Scharbag wrote

If an oil is API certified, it is safe to mix with any other API oil. Why mix? Good question.

Mixing does not work as some people think, where you mix 0W40 and 10W40 and magically get 5W40.
Those two oil I mentioned as an example will have different base stock, and molecules are basically work independent of each other.
Redline is bit different. All Redline performance oils have same base stock, so mixing them might give certain desirable weight.
As for API, API requires oil to be "safely" mixed. That does not mean performance will be increased. It just means engine will not suffer some problem.
And yes, questions is: why? Plenty options to get what one wants from get go.

Do any of you mix Ceratec into your oil and trans?

SilverSlug wrote

Do any of you mix Ceratec into their oil and trans?

I use it in oil!

Didn't you have a thread on this already regarding the trans? Or am I confusing you with someone else.

I did! Good memory!

I'm convinced it works well… I just wanted to get some second opinions from the oil mix masters (or naysayers) on this thread hahaa

I don't feel the need to add to the chemistry in Redline HP motor oil, esp. considering the levels of ZDDP. I don't want anything interfering with it, in the heat of the engine...

330indy wrote

I don't feel the need to add to the chemistry in Redline HP motor oil, esp. considering the levels of ZDDP. I don't want anything interfering with it, in the heat of the engine...

^This!
Oil is already mixed appropriately. If LM knows how to mix oil better than anyone else, they would not offer such mediocre products in the first place.
I worked on oil testing, and we were testing LM for comparison. It falls into the category of "afterthought oils." But, their Made in Germany sign in front is too much to resist

330indy wrote

I never liked how Liqui Moly played the "full synthetic" game years back! That's why I left it in the review mirror

They were the first to jump on the hydrocracked train in 90's. Their current lineup is worse than ANY Euro oil one can find in Wal-Mart. Valvoline 5W40 European Vehicles, Quaker State Euro 5W40, all would be a better choice than anything LM.