Oil detergency

[Yuk]

Which synthetic oil for gasoline engines has the greatest detergency and does the oil's grade affect it's detergency ?

 

[Al]

I think if you look at the UOA and VOA you will find that Amsoil has a very high level of Ca, Some Mg, and also ZDDP which all act as detergents. Also I believe Esters in and of themselves are probably somewhat like a detergent so I would give the nod to AMSOIL. But the question is that detergency enough and in this case I'm not sure more is better.

 

[Ken2]

The oil's viscosity grade is indendent of the detergency level. All modern oils have detergents. All are just about the same...I know, some do help clean an engine over a very long period of time. If your engine needs cleaning, clean it. Buy the oil you need for lubrication, not for cleaning. Oils for diesel engines do have a higher level of detergents, but even those will not significantly clean a sludged engine...and the viscosity might be wrong for your engine, anyway. Ken [ June 21, 2003, 05:59 PM: Message edited by: Ken2 ]

 

[buster]

quote:

---

All modern oils have detergents. All are just about the same...I know, some do help clean an engine over a very long period of time. If your engine needs cleaning, clean it. Buy the oil you need for lubrication, not for cleaning. Oils for diesel engines do have a higher level of detergents, but even those will not significantly clean a sludged engine...and the viscosity might be wrong for your engine, anyway

---

I totaly agree.

 

[Dr. T]

FWIW, I haven't tried every synth. on the market, but have found that short of Delvac 1 (but, you question pertained to gas engine oils), Syntec has cleaned out my engine 2nd best so far. Guess it doesn't smell like Tide for nothing....BTW, 3 different grades of M-1 didn't touch my sludge one ioda.

 

[RB Shannon]

here's a neat test Bob did awhile back Does Oil Alone Clean and Condition Seals

 

[Patman]

Redline oil has also been known for cleaning engines very well, due to it's high ester concentration.

 

[buster]

quote:

---

I am pretty sure that Mobil Delvac 1 5W40 would have to be near the top of the list of oils with high detergency. If you are on a budget, you may also consider Shell Rotella T 5W40 available at Wal*Mart. Both of these oils are rated for gasoline and diesel use and that is why they have much higher levels of detergents

---

True, good point. D1 or any diesel oil in fact will have very high amounts of detergents.

 

[CJH]

quote:

---

Originally posted by Yuk: Which synthetic oil for gasoline engines has the greatest detergency and does the oil's grade affect it's detergency ?

---

I am pretty sure that Mobil Delvac 1 5W40 would have to be near the top of the list of oils with high detergency. If you are on a budget, you may also consider Shell Rotella T 5W40 available at Wal*Mart. Both of these oils are rated for gasoline and diesel use and that is why they have much higher levels of detergents.