What ever happened to 30 40 motor oil

[felixx]

Remember back in the day when we all put 30 40 oil in our English cars

Then they took it off the market

Why?

[Yowzer]

It falls out at the same rate as anything else. Just run monograde 50.

[Muncie]

Castrol gtx 20/50 and moreys used to be my go to and my dads for well 30 plus years never any problems and to be fair we both gave our British cars death.

[igor]

Is there any other way to drive them?

[tim13]

yes ........ but the death happens either way !

as for original question , its part of the oil crisis , we have used up all of the thick dinosaurs so we have been forced to develop cars which can use the oil from the remaining thinner dinosaurs . its science , science is always right

[tim13]

the above theory on thinning oils is why people believe cars will run on water in the future

[japawagons]

Engine oil is for engines not for drinking. I think it might've got to your head a little bit...

[Bling]

Fast and furious showed otherwise.

[Hemi]

That belongs in the alien thread.
They prob don't have that oil because it's not used much and/or the 15//40 does the same job

[Ghostchips]

 

 

This is what happened.  It became a relic of a bygone era.

[Ogre]

They prob don't have that oil because it's not used much and/or the 15//40 does the same job

 

^This. Its a multigrade but only just. Weirdo Euros...

[RUNAMUCK]

I've often pondered this very same question.

Does anyone make a full synth 20/50?

[morkster]

Yep, heaps of brands do for hd motorcycles (spectro, amsoil etc.). I use mobil 1 v twin 20 50.

[ajg193]

Just put a Jap motor in and run 10W/40.

 

/Ling post.