Oil thread with Lab Analyst - Page 7 - BMW M5 Forum and M6 Forums
E34 M5 Discussion 1988-1995 Sedan and Touring

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post #61 of 240 Old 30th October 2013, 02:49 AM
GregT53
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Latest analysis.
3,000 miles
Valvoline VR1 20W-50 Conventional Oil
Attached Files
File Type: pdf Oil Report_3.pdf (1.18 MB, 71 views)
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post #62 of 240 Old 6th December 2013, 12:02 AM
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non lab analysis of my new oil

Non technical analysis

( probably Not safe for techies )

Changed to Mobil 10w60 extended life Motorsport oil.

About 1500 miles into this oil (halfway ish for me, I change regularly, oil! Is cheap, I only do 8k per year anyway).

Noticeable difference in sound, noisy when cold, first minute or so, almost silent when warm, smoother than ever.

Low down pull has improved, feels like its been tuned a bit, but nothing changed other than oil.

My standing still oil temp worries (after high speed motorway runs straight into standing traffic) have almost completely gone.

Temp wise, it takes a lot longer for the engine to show any signs of anything other than normal (oil and water ) with this oil, maybe an extra 20 mins of traffic jam on a hot day before the oil hits 98 \ 100, but, the engine stays hot for a long time one there.

Went to oulton park and did a track day last week, mild cold day but not freezing,

oil temps where fine, lower than previous oils on track days by around 5 - 10 deg c,

although again, once it was hot a slows paced lap didn't cool it much at all, its as if the thicker oil is more deeply heated ( I did say this was a non tech analysis).

Having looked at bits of video, I can see that I was using 6400 in 2nd and 3rd quite often, which I limited on previous track day outings (6000) to keep temps down a bit, so that's progress.

Consumption wise, just topped up by 200ml, now at 2100 miles in, two green lights out on my dash.

Did not need to top up once on the track day.

I like this oil :-)

Was using fuchs silklolene pro s 10/40 Before

Last edited by 1day; 6th December 2013 at 12:09 AM.
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post #63 of 240 Old 16th December 2013, 04:52 PM
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Jamie

Glad you liike the Mobil 10w60. I plan to use this next on my E30 M3 (non cat) and I will see if a draw similar conclusions. Always good to hear of ways to help the car run a little cooler. If oil temp is often an issue for you it may be worth checking the oil cooler lines get properly hot. On my 3.8 one is red hot (cant touch for more than 1 second) and the return is warm but considerably cooler. My 3.8 gets to quite a high oil temp when pushed (about 220 iirc) but then quickly cools back to 210 even on continued spirited driving. I take these facts to mean my oil cooler is working OK, if you havent checked then it may be worth looking at yours.

I often wonder if theres a phsycological effect with new oil as my cars invariably feel smoother after a change (I just went from Castrol 10w60 to Fuchs 5w40 on a Z M Coupe S50, and that felt considerably smoother and easier to crank).

All the best.
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post #64 of 240 Old 16th December 2013, 11:00 PM
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Hi Matt,

It definitely now sits at 95 -98 when really hot, including sustained illegal but not stupid motorway speeds.
Before it would be 98 to 105....

When it first gets really hot on track, it will go up to 103 / 105 and then drop to 98 and stay there no matter what, so I think the oil stat is working, and that there is some flow through the oil rad, but, I have long suspect that my oil radiator is slightly clogged up internally, when funds and time allow it will be replaced or cleaned out (the cost is more the laboutime of taking it off and refiting).
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post #65 of 240 Old 17th December 2013, 10:19 AM
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Sorry to go a bit off topic - I'll make this the last one.

Jamie - cleaning out the oil rad isnt a massive job. next time your car visits an expert my advice would be to add on an oil change, coolant change and oil rad blast - as there are economies of scale in those jobs. Shouldnt cost more than 3-4 tanks of fuel.
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post #66 of 240 Old 7th February 2014, 10:54 PM
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post #67 of 240 Old 2nd March 2014, 10:59 AM
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two track days on Mobile 10-60w.

and several thousand KM's road use.

second batch of this oil installed, (one per track day), and it still isn't using oil.... i had to top up by 200 ml max just before the last oil change, which given the high rpms and long motorway runs is not much at all.

highly recommend this oil.
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post #68 of 240 Old 16th March 2014, 12:02 AM
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post #69 of 240 Old 16th March 2014, 05:05 PM Thread Starter
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Edit Post:

You are correct.

I totally missed reading the very top of the sample. My eye went mediately to the zddp number. I think the zddp of this particularly oil is a bit low.

- E24 M6 1988. Shwartz/Tan (Daily driver).
- E24 M6 1988 Shwartz/Grey (Show car)
- E24 M6 1988 Royal Blue/Lotus. (Restoration)
- E24 M6 1988 Shwartz/Sparco S38-B36 3.6 (Track Toy).
- E28 M5 Black/Nature.
- E30 M3 1990. (Restoration)
- E31 840Ci 1997 Black/Black, all CSI futures daily driver soon S62-B50 6spd.
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Last edited by First e28 M5; 17th March 2014 at 01:30 AM. Reason: Post Edit
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post #70 of 240 Old 16th March 2014, 07:42 PM
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Originally Posted by First e28 M5 View Post

Can you please provide a bit more information regarding on how many miles have you driven ? 2,500k miles ? This is very key important note.
It says Virgin.
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