10w40 recommendation

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Yes,10W40 is a common synthetic blend grade here in Malaysia, like Quartz Energy 10W40, Helix 7 10W40, Magnatec 10W40 ,Petronas syntium 10W40 etc.
Minerals would be 15W40 and full synthetics in 0/5W40.
 
When I lived in Greece a long time ago the shops put 10w-40 in everything. Today, friends that still live there say it's the same except now there is some 5w-40(probably synthetic like zeng pointed out, above) along with the 10w-40.
 
I don't know of any new cars that have 10W40 as the recommended fill.

However, I do know that many cars in Australia are running on 10W40 Semi-Synthetic right now. Here it's the default bulk fill for many shops and garages, my local one included. They all seem to use a semi-synthetic 10W40 that is both API SN and ACEA A3/B4.

I assume it became so common because it was the one grade that worked for most applications. It was A3/B4 for the Euro cars, it was SN for the Japanese cars, and many local cars spec'd a 15W40 mineral - so it worked for these Holden's and Ford's too.

Met a guy with a 2005 Corolla with the 1ZZ-FE engine, he said the Aust. owners manual spec'd 10W40, and one of our first Castrol Magnatec grades was in 10W40, so it's a common oil around here.

In my personal oil stash, I have 6L of Penrite Vantage, 5L of Valvoline DuraBlend and 5L of Shell Helix HX7 all in 10W40 semi-syn with SN and A3/B4.

They are quite affordable (for Australia), I've picked them up at $20 to $25 for 5L on sale, and most carry a few Euro OEM spec's too, such as the Shell Helix HX7 below

Quote:
Specifications: API SN/CF; ACEA A3/B3, A3/B4; JASO SG+; MB approval 229.3; VW 502 00/505 00; Renault RN0700, RN0710. Meets the requirements of Fiat 955535-G2
 
Originally Posted By: 4WD
It was one of the early multi vis blends as mentioned in this picture:




BUt ... but ...

That water oil 20 grade was introduced in the 2000s as a EPA conspiracy.
 
Or the EPA was more stealth in the early 70's
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Atleast in Spain 10W-40 is still probably the best selling oil, 99% of those are usually Synthetic blends.
The various mechanics i know use it in anything that is over 20-25 years old.
Most new cars spec 5W-30 or 5W-40 Synthetic oils, only recently have i started to see 0W-20 and 5W-20 on the shelves, and in small numbers.
 
Van Horne developed a 10w30 oil in 1949 using polymethacrylates.Mobil marketed the first synthetic multigrade in 1973,the 5w20 oil as pictured above
 
In greece most most mechanics use 10w40 oils in many cars and the typical oil change interval is 3-5k miles. In older years the oil most used was 20w50. My father was using 10w40 in our honda jazz but when i started taking care of the car i switched to 5w30 or 5w40 synthetic..but i kept the low oci because the engine wasnt so clean inside. Not burning any oil though
 
My Mother has a 3 year old Suzuki Jimmny that specifies nearly every viscosity you could possibly think of! I do 6 monhtly oil changes on it, usually opt for a 10w40 throughout the summer and a more expensive synthetic 0w40 throughout the winter.

I buy Chevron Supreme 10w40 semi synthetic in bulk from Coscto as it goes in my Fathers LR Defender 300tdi all year round (although that might change), our lawnmowers and the Jimmny in the summer.
 
Originally Posted By: FordCapriDriver
Atleast in Spain 10W-40 is still probably the best selling oil, 99% of those are usually Synthetic blends.
The various mechanics i know use it in anything that is over 20-25 years old.
Most new cars spec 5W-30 or 5W-40 Synthetic oils, only recently have i started to see 0W-20 and 5W-20 on the shelves, and in small numbers.



also best selling in vehicles used in the Fast and Furious movies
laugh.gif
 
Originally Posted By: OneEyeJack
Do any of you older members remember 20w20?

I do, and saw an example on the shelf not terribly long ago. Wakefield Canada obviously made an example until fairly recently. Oddly enough, I never saw it around as a kid, though.
 
Originally Posted By: 4WD
It was one of the early multi vis blends as mentioned in this picture:




What vehicle in the 70's would have had 5w20 as an allowable viscosity?

I would think 10w30 would be the thinnest.
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I'm not sure of any manufacturers that call out 10w40 to be used as a preference. There are still some OEMs out there - Mazda, Toyota, Hyundai that allow any grade between 0w-20 and 20w50 to suit the climate.
 
Originally Posted By: Garak
Originally Posted By: OneEyeJack
Do any of you older members remember 20w20?

I do, and saw an example on the shelf not terribly long ago. Wakefield Canada obviously made an example until fairly recently. Oddly enough, I never saw it around as a kid, though.

In my Capri's owners manual it has a chart like many old cars where it says from what temperature each viscosity is ok to use and 20W-20 does appear on the chart.
 
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