AutoRX in 96 Benz SL320

[Catterman]

I have about 88k on her and am going to give it a dose. My question is do I need more then one bottle in there, as the oil capacity is 7.5q? THanks!

 

[Crashbox]

Per the instructions- yes, about 1.25 bottles for a 7.5 quart sump.

 

[Catterman]

Thanks, I must have missed that!

 

[sprintman]

Yes I Used 1.5 bottles with 6.5 quarts in my BMW. You may as well throw in two full bottles. Make sure you use an oil with no ester content.

 

[Crashbox]

The "generic" recommendation is two ounces per quart of sump capacity, I think it's still on the Auto-Rx website somewhere but it may be rather buried now after the website remodeling and the fact that they have changed the "basic" treatment instructions.

 

[JMJNet]

It is still there, on the right hand side on the box under the search box, it said:

Auto-Rx® Application Amounts To Use.

NO IT IS NOT BURIED

 

[Crashbox]

But it is NOT where one would expect to find it- under "APPLICATIONS" on the left-hand side.

 

[Rick20]

Personally, I would run the 2 fluid ounce per quart ratio, then use up the rest of a two bottle purchase on maintenance doses of 3 fluid ounces with each oil change after the rinse phase.

 

[Crashbox]

Ditto here, Rick20. Although for this time around on my '95 Civic I did the whole-bottle thing since I have plenty of ARX. I probably didn't need to, though, but it was worth a try.

My understanding is the newer whole-bottle recommendation is merely to simplify the basic application but the two ounces/quart IMO would likely be just as effective on an engine that wasn't too heavily sludged.

Good suggestion on using the remainder for maintenance doses.