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finally giving Motul 300V a try #4700332
03/20/18 02:36 AM
03/20/18 02:36 AM
Joined: Aug 2009
Posts: 95
Wiltshire, UK
bonjo Offline OP
bonjo  Offline OP
Joined: Aug 2009
Posts: 95
Wiltshire, UK
I tend to change my oil at 4000 miles interval (although honda recommends 8000) because of the low mileage I do.

I have alsway used a real full synthetic in my engines (not synth blend, technology...) and 10/50 grade (although honda recommends 10/30!).

So after my favorite brand & viscocity was discotinued, I switched to silkolene pro4+. I could not notice any difference to gearchange, nor fuel consumption until a year and 2000 miles later when I noticed the oil pressure light would stay on a split of a second longer on first cold start of the day.

At the last change I decided to change grade to 10/40 and switch to motule 300V. Here are my initial observation after 500 miles:

[/i] no change in fuel consumption
the oil pressure light now goes off almost immediately (even at close to freezing temperatures)
the engine cooling is not as good as 10/50: running temperature is the same but the thinner oil is very quick to heat up when moving slowly or stationary[i]


So I don't think the engine cooling is as good as 10/50 and I'll switch back to this grade at the next oil change although not to pro4+

Re: finally giving Motul 300V a try [Re: bonjo] #4700415
03/20/18 06:42 AM
03/20/18 06:42 AM
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Kamele0N Offline
Kamele0N  Offline
Joined: Feb 2015
Posts: 2,362
Slovenia EU
Originally Posted By: bonjo

So I don't think the engine cooling is as good as 10/50 and I'll switch back to this grade at the next oil change although not to pro4+


Now "thin oil" folks will be crazy smile


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
Re: finally giving Motul 300V a try [Re: bonjo] #4700458
03/20/18 07:40 AM
03/20/18 07:40 AM
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
ARCOgraphite Offline
ARCOgraphite  Offline
Joined: May 2009
Posts: 12,283
N.H, U.S.A.
Most folks notice better cooling with thinner oil; 40 is not a thin oil by any means.

Which motorcar car and engine are you discussing?

1.5 Litre? Honda Jazz?

Last edited by ARCOgraphite; 03/20/18 07:41 AM.

2014 Nissan Rogue S CVT, OC#10 47272mi-QSUD10W30+5w20 Toughguard Filter; '17 Subaru Crosstrek CVT OC#2 ?? mi-SOA/Idemitsu 0w20 + SOA Filter
Re: finally giving Motul 300V a try [Re: bonjo] #4700618
03/20/18 11:01 AM
03/20/18 11:01 AM
Joined: May 2012
Posts: 1,850
The land of USA-made Subies!
SubieRubyRoo Offline
SubieRubyRoo  Offline
Joined: May 2012
Posts: 1,850
The land of USA-made Subies!
Also, you do realize that the oil is not heating up, it is carrying away the heat that is generated in the engine and therefore shows the oil is actually performing as designed. Unless the oil gets so hot that it cokes up or evaporates, it's doing what it should. Do you think Honda would recommend (and require) a 30 weight if it wasn't capable of protecting the engine?

Re: finally giving Motul 300V a try [Re: SubieRubyRoo] #4700688
03/20/18 12:23 PM
03/20/18 12:23 PM
Joined: Dec 2005
Posts: 10,355
Upper Midwest
kschachn Offline
kschachn  Offline
Joined: Dec 2005
Posts: 10,355
Upper Midwest
Originally Posted By: SubieRubyRoo
Also, you do realize that the oil is not heating up, it is carrying away the heat that is generated in the engine and therefore shows the oil is actually performing as designed. Unless the oil gets so hot that it cokes up or evaporates, it's doing what it should. Do you think Honda would recommend (and require) a 30 weight if it wasn't capable of protecting the engine?

No, the majority of the heat the oil is because of internal friction in the oil. In other words it is self-generated and gets worse as the viscosity increases.


1994 BMW 530i, 238K
1996 Honda Accord, 266K
1999 Toyota Sienna, 407K
2000 Toyota ECHO, 280K
Re: finally giving Motul 300V a try [Re: kschachn] #4701869
03/21/18 11:08 AM
03/21/18 11:08 AM
Joined: Sep 2013
Posts: 10,693
Indiana
dlundblad Online happy
dlundblad  Online Happy
Joined: Sep 2013
Posts: 10,693
Indiana
Originally Posted By: kschachn
Originally Posted By: SubieRubyRoo
Also, you do realize that the oil is not heating up, it is carrying away the heat that is generated in the engine and therefore shows the oil is actually performing as designed. Unless the oil gets so hot that it cokes up or evaporates, it's doing what it should. Do you think Honda would recommend (and require) a 30 weight if it wasn't capable of protecting the engine?

No, the majority of the heat the oil is because of internal friction in the oil. In other words it is self-generated and gets worse as the viscosity increases.


X2

One can notice this with air cooled OPE and an infrared gun.


03 Jeep WJ 4.0 202k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 186k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 153k Synpower 5w30 Supertech ST3980 (Ecore)

Re: finally giving Motul 300V a try [Re: bonjo] #4712030
03/31/18 03:18 AM
03/31/18 03:18 AM
Joined: Aug 2009
Posts: 95
Wiltshire, UK
bonjo Offline OP
bonjo  Offline OP
Joined: Aug 2009
Posts: 95
Wiltshire, UK
This is related to motul motorcycle oil. the bike in question is cbr1000rr8 (runs between 76&82 centigrade in normal riding, winter~ summer)which gets up to 90~100 deg in slow traffoc.

by thinner I describe lower viscocity with high temp of 40 being less than that a 50.

This is my experience and I know it is not in line with what I was expecting! But my temperature guage doesn't lie frown

Last edited by bonjo; 03/31/18 03:18 AM.

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