What oil "type" and "brand" do you use?

[BoBo]

^That's one of my favorite oil brand and weight, that must the one with the green cap.

[mx54life]

Eneos. My co-worker got me to check this oil out. And I have used it on my wife's CRV and at 4k it seems to be much lighter in color than the Mobil 1 full syn on my Mazda 5 with 3.5k. Both car's oil change were done at the same time as the 2014 CRV has an on-board oil interval schedule so I just do them at the same time. I am still skeptical on this oil but I did load it on my 94 Miata so we shall see.

But honestly how can one tell without some lab test? And I am not crazy to send an oil sample to a lab to prove how good this oil is lol.

One thing nice about this oil is that I just order them from Amazon and they get delivered at my door.

[— Agent☣Orange —]

But honestly how can one tell without some lab test? And I am not crazy to send an oil sample to a lab to prove how good this oil is lol.
.

Exactly. Some of you guys want to start with a pure Esther (Royal Purple?) but a few want to run full synthetic which starts as dino grease. It's a Miata motor for crying out loud. Just keep it clean and you'll be fine.

[— Malibu Q —]

Castrol, because Gran Turismo.
I only drive a couple of thousand K's a year so it hardly discolours before I change it.

[lowandrusty]

Mobil1 0w40 in Sharka
Mobil1 10w30 in Bucky (yay for cheap oil at costco)
Mobil1 5w20 in the Mazda3 (another costco weight)

I used to use Mobil 1 also, until I recently switched to Pennzoil Ultra synthetic. I've been really impressed with the Pennzoil. My Miata currently has 218k on it, I bought it with 173k and it's always had pronounced lifter tick by the time I am due for an oil change. Using the Pennzoil I'll only ocasionally get hot restart lifter tick, and it's quiet up to the service interval. I was impressed by the difference.

[—tsingson—]

Mobil1 full synthetic 5w30

[94R]

Whichever synthetic oil is on sale. Synthetic because I'm lazier as I get older, so the change interval has been extended from the norm of every 3 months to every 4 months-ish.

[— kung fu jesus —]

I run 5w40 in the Miata (Rotella T6) and e30, found it helpful for cleaning some of the engine in the e30. In the summer, I run 20w50 in the e30, which is track season. It's an old engine, likes it a lot.

[atlnb]

Usually Pennzoil Platinum. Before that, Royal Purple

[JamieH]

'97 stock engine w/ 168,5xx miles

Mobile Super High Mileage 10W30 with a Mobil M1-108 filter.

[Slampen]

Exactly. Some of you guys want to start with a pure Esther (Royal Purple?)

Didn't get the sarcasme, is it wrong to use Royal Purple?
I do.

[The Driver]

The Shell synthetic for diesel cars. Have been using it since 2010. I also used it on my 2002 Tacoma truck.

[—Martin—]

[— Agent☣Orange —]

Didn't get the sarcasme, is it wrong to use Royal Purple?
I do.

No sarcasm. I mean that if folks really want a pure synthetic oil, better to start with a real one like Royal Purple. Mobile 1 does not start life as a pure ester.

[Slampen]

I use Royal Purple because its cheap and keeps my HLA's happy (aka silent).