Low-ash, NON-synthetic 5w-20: any suggestions?

[d00df00d]

Assuming nothing catastrophic happens by the end of this week, I will have a car that takes non-synthetic 5w-20.

I will NOT be switching to synthetic or using any other grade.

Within those parameters, I want the best possible deposit control and lowest ash content.

Oil change intervals are not an issue; I'll stick to 3,000 miles if I have to.

I was probably just going to look for API SN and ILSAC GF-5 (Energy Conserving). Anyone have any suggestions beyond that?

 

[kschachn]

Sure, Mobil 1 ESP

Originally Posted By: d00df00d
I was probably just going to look for API SN and ILSAC GF-5 (Energy Conserving). Anyone have any suggestions beyond that?

 

[salv]

Valvoline conventional 5w20 has a very low sulfated ash of .80. It is a proven performer.

 

[901Memphis]

Not even Supertech synthetic or QSUD?

 

[rw19]

Pennzoil YB

 

[The_Captain]

Pennzoil Yellow Bottle: It has high calcium, high moly content and boron.

 

[wemay]

Originally Posted By: salv
Valvoline conventional 5w20 has a very low sulfated ash of .80. It is a proven performer.


+1

 

[jhellwig]

Originally Posted By: d00df00d
Assuming nothing catastrophic happens by the end of this week, I will have a car that takes non-synthetic 5w-20.

I will NOT be switching to synthetic or using any other grade.

Within those parameters, I want the best possible deposit control and lowest ash content.

Oil change intervals are not an issue; I'll stick to 3,000 miles if I have to.

I was probably just going to look for API SN and ILSAC GF-5 (Energy Conserving). Anyone have any suggestions beyond that?


Rotary?

 

[Nederlander75]

That was my thought too.

Castrol gtx left the least soot on my exhaust of any 20 wt I used and was the easiest to clean off

 

[jimbrewer]

Don't know about ash content, but its pretty hard to beat Motorcraft semi-syn 5w-20. Not particularly cheap on the shelf, but you can get it done at Quicklane kind of on perma-sale for $40 just about everywhere. They also rotate your tires for you for that.

 

[d00df00d]

Originally Posted By: jhellwig
Rotary?

Bingo!

 

[d00df00d]

Originally Posted By: Nederlander75
Castrol gtx left the least soot on my exhaust of any 20 wt I used and was the easiest to clean off

What kind of car? What other oils have you tried?

 

[wemay]

Originally Posted By: Nederlander75
That was my thought too.

Castrol gtx left the least soot on my exhaust of any 20 wt I used and was the easiest to clean off


GTX also has a relatively low NOACK.

 

[jhellwig]

Originally Posted By: d00df00d
Originally Posted By: jhellwig
Rotary?

Bingo!


I think that most people recomend a dedicated rotary oil. There have been several threads about it.

 

[d00df00d]

I really want to stick to the manufacturer's spec because the car I'm buying still has a LOT of warranty life on it. I'm worried that any oddball oil might break the heads of service department folks in the event of a warranty issue.

After the warranty is up, if I still have the car, I'll strongly consider switching to a dedicated rotary oil.

 

[weasley]

Y'know that when Mazda say "no synthetic" they mean "no PAO"? In Japan the situation is similar to Germany in terms of what is and isn't "synthetic". Mazda's own-label oil provided in Europe for the Renesis engine is a Group III oil.

 

[Nederlander75]

2010 RX8.

I've used all the main mineral 5w20s with GTX producing the least soot on the pipes and Valvoline being just barely worse than GTX. With GTX I only need to use regular car wash disolved in water to clean the pipes. Valvoline took Castrol Super Clean and the rest Bar Keepers Friend and a Scotch Brite.

 

[jhellwig]

Originally Posted By: d00df00d
I really want to stick to the manufacturer's spec because the car I'm buying still has a LOT of warranty life on it. I'm worried that any oddball oil might break the heads of service department folks in the event of a warranty issue.

After the warranty is up, if I still have the car, I'll strongly consider switching to a dedicated rotary oil.

I think mazda makes the zpecific rotary oil

 

[Nederlander75]

Not for sale in the US. Idemitsu makes one but isnt support by Mazda's warranty.

 

[d00df00d]

That's pretty much what I was worried about.

Guess I'll be sticking with GTX, then. Isn't that what Mazda dealers in the US recommend, anyway?