Help choosing the proper oil for my next change

[78F350]

Running oil meant for Diesel engines is not recommended due the that additive package may not be good for our engines

May not meet the standard specified for post 2011 engines, but should be good for us.
https://prodepc.blob.core.windows.net/epcblobstorage/GSAP_msds_01360364.PDF
The Truth About Zinc & Motor Oil | Driven Racing Oil
https://en.wikipedia.org/wiki/Shell_Rotella_T


On a slow night shift, I was all over this stuff. Somehow between all that and a few random forum posts, I was assured that it's not an issue in our 986s.
Edit: Just to be clear, I am not implying that every oil formulated for diesel engines is a good idea. I am specifically referring to Rotella T6 5W-40.

[BoomerRoadie]

This is a great thread. I'm learning a lot and being totally entertained too!

I did some cost comparison strictly using Amazon prices. Also, I'm only looking at 5W40 type synthetic oils as that is the one I've decided to go with (plus that's what I'm using now, specifically Total Motor Oil)

Best price per quart:
Mobil 1 5W40: $7.98
Castrol Edge: $8.10
Pennzoil Platinum Euro: $7.18
Motul 8100 X-cess: $6.53 (in bigger bulk about $6.00)
Total: $7.00
Shell Rotella: $5.52
DT-40: $10.99

Now barring any dumb math errors (entirely possible) and maybe missing a better deal somewhere on Amazon (I did this quick)...it looks to me like the Total is a pretty good buy when you buy it 15 quarts at a time. Clearly Rotella is the best buy.

The only comment I have about Rotella is that is says its for diesel engines. Was I picking the wrong one? Little confused here. Some say they work on both engines.

Anyway.....

[Ciao]

I changed the oil for first time and used Liqui Moly 2332 Leichtlauf High Tech 5-40w $38.90 for 10 qts and noticed a difference in engine sound; quieter. I believe the previous owner used M1 0-40w and noticed a mechanical sound during backing up in my garage at a very slow pace releasing the clutch, but not with Liqui Moly

[particlewave]

Originally Posted by BoomerRoadie

This is a great thread. I'm learning a lot and being totally entertained too!

I did some cost comparison strictly using Amazon prices. Also, I'm only looking at 5W40 type synthetic oils as that is the one I've decided to go with (plus that's what I'm using now, specifically Total Motor Oil)

Best price per quart:
Mobil 1 5W40: $7.98
Castrol Edge: $8.10
Pennzoil Platinum Euro: $7.18
Motul 8100 X-cess: $6.53 (in bigger bulk about $6.00)
Total: $7.00
Shell Rotella: $5.52
DT-40: $10.99

Now barring any dumb math errors (entirely possible) and maybe missing a better deal somewhere on Amazon (I did this quick)...it looks to me like the Total is a pretty good buy when you buy it 15 quarts at a time. Clearly Rotella is the best buy.

The only comment I have about Rotella is that is says its for diesel engines. Was I picking the wrong one? Little confused here. Some say they work on both engines.

Anyway.....

Mobil 1 is much cheaper if you buy it in 5qt jugs. Usually around $25 for 5qts ($5 per qt).

[Steve Tinker]

Originally Posted by particlewave

Mobil 1 is much cheaper if you buy it in 5qt jugs. Usually around $25 for 5qts ($5 per qt).

And if you buy Mobil 1 in Australia, it will only cost you $US75-00 for 5 litres......
Aint we lucky.....

[JFP in PA]

Originally Posted by BoomerRoadie

This is a great thread. I'm learning a lot and being totally entertained too!

I did some cost comparison strictly using Amazon prices. Also, I'm only looking at 5W40 type synthetic oils as that is the one I've decided to go with (plus that's what I'm using now, specifically Total Motor Oil)

Best price per quart:
Mobil 1 5W40: $7.98
Castrol Edge: $8.10
Pennzoil Platinum Euro: $7.18
Motul 8100 X-cess: $6.53 (in bigger bulk about $6.00)
Total: $7.00
Shell Rotella: $5.52
DT-40: $10.99

Now barring any dumb math errors (entirely possible) and maybe missing a better deal somewhere on Amazon (I did this quick)...it looks to me like the Total is a pretty good buy when you buy it 15 quarts at a time. Clearly Rotella is the best buy.

The only comment I have about Rotella is that is says its for diesel engines. Was I picking the wrong one? Little confused here. Some say they work on both engines.

Anyway.....

You want the Shell Rotella T6, and yes it is a diesel oil, but it also works fine in gas engines.