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Originally Posted By: PimTac Is Gulf made by Total? Not Total,the Ashland Group in the Netherlands

Is this an updated version of Mobil's Extended Performance Oil from 2007 with a 15,000 mile change interval,and the addition of a disclaimer stating to follow the OEM drain interval.

Van Horne developed a 10w30 oil in 1949 using polymethacrylates.Mobil marketed the first synthetic multigrade in 1973,the 5w20 oil as pictured above

Thanks for the responses.I am thinking out loud with regard to the 5w,or 10w.The 10w40 is a semi synthetic,and the 5w40 is a synthetic and it was suggested to me that the synthetic 5w40 would give better protection in this older Engine,i have both oils to hand,but i can see that it's splitting...

No lower than 8c/45f

Any harm in switching from 10w40,to 5w40 in a 30year old car that has always had 10w40? Just thinking that the 5w40 would flow quicker when cold which might prevent future wear on this older Engine.Engine has 50,000 miles on it and doesn't use any oil.Or should i just stick to the 10w40,What...

A lot of guys in Europe run Total Quartz 9000 5w40 in these cars with great results.

Virtus_Probi Exxon Mobil is ranked # 9 in the Forbes list of the world's largest public companies.Profits at the end of the last financial year were $16.2b,market worth is $363.3b.Royal Dutch Shell is ranked # 50 on the list with a profit of $2.1B and a market value of $210b.Total,and Chevron...

The 5w30 is actually thinner @ 40c than the Edge 0w40

In Europe,Valvoline has discontinued the Durablend name.The Semi-Synthetic 10w40 Durablend oil is now called Synpower 10w40,and is the only Semi Synthetic oil in the Synpower line.I don't know if this change will be applied in the US and other countries.Very good product,i used it for years in...

Originally Posted By: MolaKule None. Warm it up and shake before using. Since when was it considered normal to warm up and shake Motor Oil before using it.I can't recall ever seeing those instructions on a container of Oil.

http://www.pipeflow.co.uk/public/articles/Viscosity_And_Density_Units_And_Formula.pdf

As an example,in the UK for 4.4 quarts/5 Litres of Mobil 1 ESP Ow40 we pay $74/£60.Amsoil oils are $27/£22 per quart.The Mobil oils are sometimes cheaper on a special,some places around $53/£43.

Just shows how sometimes a good Group 3 oil can outperform a Group4/5 in certain tests.Both good oils.

The Euro Formula is a little bit thinner and has a higher Flash Point.

My local Ford Dealer is insisting that i use the Ford Branded ATF he had not heard of the Fuchs product,or Dexron specs,didn't fill me with confidence knowing that he apparently knows less than i do Would i be safe to use the above Fuchs ATF if it appears to meet the required spec?

Gulf Competition is a GL4 and GL5 Oil.Gulf Formula G is Group 3

Many top brand synthetics didn't appear to do too well in this test https://bobistheoilguy.com/forums/ubbthreads.php/topics/2749545/Re:_%E2%80%9CScorched_earth%E2%80%9D_test

General maintenance warning light,basically means it's time for an oil change.

Does anyone have any experience of using the above Engine oils.