Valvoline Premium Blue 5W40

[po18guy]

Dad the pilot was a Valvoline guy. So, am perusing their applicable products. Cummins Diesel likes this oil, but I do not know their valve gear.

https://sharena21.springcm.com/Public/Document/18452/5a457451-fe75-e711-9c10-ac162d889bd3/b240026d-0abd-e711-9c12-ac162d889bd1

Zinc is shown as 1270ppm. Sufficient for flats?

[Lucky Phil]

2 hours ago, po18guy said:

Dad the pilot was a Valvoline guy. So, am perusing their applicable products. Cummins Diesel likes this oil, but I do not know their valve gear.

https://sharena21.springcm.com/Public/Document/18452/5a457451-fe75-e711-9c10-ac162d889bd3/b240026d-0abd-e711-9c12-ac162d889bd1

Zinc is shown as 1270ppm. Sufficient for flats?

Yes all good for Zink and everything else looks fine. I've always used Mobil 1 0W-40 without any issues like oiling up the filter box, it's been perfect. I am going to try a 10-60 in the Daytona engine after running in though.

One issue with Diesel oils though is they are very high detergent oils and if you switch to them in an engine with a few miles on it they will break loose a lot of sludge and any build up in the engine which can lead to issues. If your engine has been kept clean you should be fine.

Personally I dont see the need to run a Deisel oil in a petrol engine anymore. Anything over 1000ppm ZDDP will keep a flat tappet engine happy and around 1200-1400 is perfect. More Zink than that is getting into the diminishing returns category. There are oil manufacturers around that make flat tappet specific oils these days such as Penrite for older engines. I'll be running their full synthetic 10W-60 oil in the Daytona.

Dont even think about a mineral based or fortified oil these days.

Ciao   

[po18guy]

Good on the zinc then. I note that Valvoline stresses diesel, but also states that it is appropriate for gas engines. Having just turned 7K miles, and this being probably its 4th change, the motor is plenty clean inside.

Well do I remember the wailing against detergent oils in the late 50s and early 60s. Many, believing it to be "the answer" poured it into horribly sludged up straight sixes and V8s, with the resultant clogging of filters, pump screens and even hydraulic lifters. Brother and I tore down some engines in which you could barely find iron for all the sludge. 

[gstallons]

Hey , diesel oils for diesel engines and gas oils for gas engines . All that stuff on the top of that can (when they were cans) means something . 

 I m looking at oils made from natural gas just "for entertainment purposes only" . 

[po18guy]

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