'Summer weight oil'

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Yeah, with the new multi-visc. oils, I don't agree with the 'winter/summer' thing either.

Just pick an excellent synthetic to cover all bases dependant on where you live. You live in Mexico's climate, use a 20-50....Canada, a 5-50 or 0-40. Heck, everyone here changes their oil after 3k anyway
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The only stumbling block is there is no 0-60 yet. Otherwise, to Mickey-mouse with 2 different 30 weights (eg. 0-30 and 10-30) is non-sense IMO. ie. Just use a 0-40 or 5-40.

Yes, outside temp. will have a HUGE effect on tire pressures. Check weekly/bi-weekly. Mostly noticed by those that live in areas that it goes from -25C to 35C. Don't think it matters what gas you use....other than if the N is moisture free...a problem at most gas station air pumps.

However, moribundman, the manuf. tire pressures aren't set for 'soft'. They're based on OEM wheel/tire combos and vehicle weight. Increasing psi's will decrease your traction (especially wet/rough road) and noise. Fuel economy gains will be minimal (after OEM recom) unless you have a different tire/wheel combo...and all at the expense of ride quality (on anything but smooth roads). But, to each his/her own....
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quote:

Originally posted by Dr. T:
However, moribundman, the manuf. tire pressures aren't set for 'soft'. They're based on OEM wheel/tire combos and vehicle weight. Increasing psi's will decrease your traction (especially wet/rough road) and noise. Fuel economy gains will be minimal (after OEM recom) unless you have a different tire/wheel combo...and all at the expense of ride quality (on anything but smooth roads). But, to each his/her own....
cheers.gif


I believe the manufacturer's recommended pressure would actually be biased towards the high side (for fuel economy/CAFE) reasons). After all the car manufacturer is going to get blamed for the fuel mileage, and the tire manufacturer would get any blame going for poorer tire mileage!
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quote:

Originally posted by Dr. T:
Yeah, with the new multi-visc. oils, I don't agree with the 'winter/summer' thing either.

The only stumbling block is there is no 0-60 yet. Otherwise, to Mickey-mouse with 2 different 30 weights (eg. 0-30 and 10-30) is non-sense IMO. ie. Just use a 0-40 or 5-40.


Well, I have two problems with an oil that claims "all uses for all seasons."

One, I live in a very extreme climate that, last August, had daytime temps of 100 F / 38 C for almost a week. Last month, we reached -42 F / -41 C. I don't know of too many oils that function well at both extremes.

Two, I've noticed some distinct differences in oil consumption running what should be the "same" viscosity synthetic oil. I'll then compare that to a much heavier viscosity I tried in 2001 and will use again this summer.

My vehicle is a 2000 GMC Sierra pickup with the Vortec 5.3 V8. Purchased new:

Mobil 1 0W-30: 1 litre every 6,800km
Mobil 1 10w30: 1 litre every 11,000km
Mobil 1 15W-50: 0 litre over 11,200km

Oddly enough, I use the 10w30 in summer while doing heavy towing (Up to 4,000kg) and hauling. You would think my oil consumption would be much greater in summer, since the motor is under much higher work loads.

Same as when I tried the 15W-50: heavy summer towing and hauling. I was surprised the dipstick never budged from FULL.

I did try to use the 0w30 into summer of 2002, but the motor made a LOT of valvetrain noise at operating temps:

tickticktickticktickticktickticktick

Which drove me bonkers.

Most of that noise goes away running Mobil 1 10w30, and that noise is completely absent running Mobil 1 15W-50. Or should I just ignore the noise and oil consumption??

If I try to use a 10w30 or heavier oil in temps colder than 0 F or -18 C, then I have heavy startup noise:

clackclackclackclackknockknockknockknock

I suppose if I lived in a moderate climate I'd run just one viscosity year round. I don't see how I have that option where I currently live.

Or maybe my motor is possessed? I hope not, it's proving to be otherwise reliable, strong, and relatively fuel efficient.

Jerry
 
Jerry, I'd still love to experience -41C personally....we only got down to -23C this winter down in Toronto. I feel totally left out.

Where exactly did it get down to -41C in ON? SSMarie? TBay? Sudbury? Timmins? Manitoulin?
 
My normal load recommended tire psi is 39. Maximum load is 42 front, 44 rear...Add 7 for speeds over 100mph. That would mean 51 psi!
cheers.gif
 
I have put on bigger tires beacause I wanted more grip and OEM does specify them as upsize option so the rims can handle it. I'm doing pretty much same thing as you are by putting 38 front and 35 rear..car zooms around the corners much better!!!
:-)))
 
tire pressure is an interesting subject.
alot of honda insight owners run at 50psi or higher, for fuel economy.

i run my tires at 40 in the rear and 45 up front.
 
quote:

Originally posted by Dr. T:
Jerry, I'd still love to experience -41C personally....we only got down to -23C this winter down in Toronto. I feel totally left out.

Where exactly did it get down to -41C in ON? SSMarie? TBay? Sudbury? Timmins? Manitoulin?


Oh no, you're not left out. Once you experience the "joy" of that temp, you will NEVER want it again.

Lot's of places in North West Ontario had that temp this winter: Dryden, Sioux Narrows, Pickle Lake, Kenora, Red Lake, etc etc.

Fortunately, that Winter Wonderland weather seems to be behind us. The Weather Network is quite fun to watch in winter.

I must admit cars are WAY better then they used to be. Not too many folks carry emergency equipment, snowsuits, etc in winter anymore, though when they do have a breakdown they cry on their cell phone for help.

Jerry
 
Dr. T wrote:
quote:

My normal load recommended tire psi is 39. Maximum load is 42 front, 44 rear...Add 7 for speeds over 100mph. That would mean 51 psi! [Cheers!]

Dr. T, don't look at me like that. You're running your tires on higher pressure than I do!
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I wouldn't run over 40 psi under any circumstances with my setup. BTW, my Contis max out at 51 psi.
 
quote:

Originally posted by heyjay:
One, I live in a very extreme climate that, last August, had daytime temps of 100 F / 38 C for almost a week. Last month, we reached -42 F / -41 C. I don't know of too many oils that function well at both extremes.



I've been thinking of your post for a few days and must say that there are plenty of oils which can perform well at both extremes!

GC 0w30 is one of them, it flows very well on the coldest morning, but with it's 12.2 cst at 100c viscosity, it's got a good viscosity for the hottest day too.

Mobil 1 0w40 is also good, sure it thins out a bit in some applications, but it still stays as a thick 30 to thin 40wt.

Amsoil's 5w30 and 0w30 also flow very well in extreme cold, but are thicker 30wts that don't thin out, so they are also good in the heat.

There are many other oils I haven't listed which can flow well in the cold and offer good hot protection too, synthetic of course.

And more and more 0w30 and 0w40s are going to be coming out in the near future I'm sure.
 
Quote:

And more and more 0w30 and 0w40s are going to be coming out in the near future I'm sure.

Yep and they will be welcome , especially the new 0w-40's that will be on the light end of the scale . Some of the light VI 0w-30's will not be suitable for all engines though . Some are now made Ford specific ect .

There are some very good 5w30's though that do most all what these 0w's will , at least for the time being .

Just something groovy about a 0w30 with a long list of specs behind the name
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http://no.servicebooking.net/castrol/engine.asp

Now what was this thread about , tires or something like that ?
 
Yep, my dream oil is a 0w40 that is 13cst at 100c, and stays that way. So this is why I like GC so much, since it's the closest thing to that so far. The Castrol 0w40 available in Europe and Australia sounds like my perfect oil, and if this oil is sold here under the BMW 0w40 label like Dr.T mentioned, it is good, but it's also double what I pay now too.

So I guess you could say my dream oil is a 0w40 that doesn't cost more than $8 per liter up here. (not the $13 to $14 per liter from BMW)
 
quote:

Originally posted by sprintman:
It's called Castrol Formula R 0W40 12.9 cSt @ 100C, CCS 5200, HTHS 3.6, Pour -54C, TBN 10.3. It's the replacement for GC (here anyway)

I love the specs on this oil! I sure hope it comes here just like SLX did, repackaged in Syntec format and sold at under $7 per liter!
 
Guys, if I do a VOA will we be able to tell which oil the BMW 0-40 is...eg. Elf or Castrol or something else?
 
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