I have a Duramax Diesel. How effective is the Auto-Rx on diesel engines and is it recommended?
Auto-RX
- Thread starter tuchodi
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Yes, the website should guide you. You may get more/better answers in the oil additives or diesel oil forum.
Your running HDEO I promise you there is no sludge or varnish in your Dmax.....Save your money
Originally Posted By: DieselTech
Your running HDEO I promise you there is no sludge or varnish in your Dmax.....Save your money
+1
Don't waste your money on that stuff.
Your running HDEO I promise you there is no sludge or varnish in your Dmax.....Save your money
+1
Don't waste your money on that stuff.
Originally Posted By: Spartuss
Originally Posted By: DieselTech
Your running HDEO I promise you there is no sludge or varnish in your Dmax.....Save your money
+1
Don't waste your money on that stuff.
+2 Put your money in the oil and filters you buy, not in silly engine laxatives to put in after using inadequate oil or oil change intervals. Now if its an engine with a known history of abuse from a previous owner, then some of the milder purgatives might have a use.
Originally Posted By: DieselTech
Your running HDEO I promise you there is no sludge or varnish in your Dmax.....Save your money
+1
Don't waste your money on that stuff.
+2 Put your money in the oil and filters you buy, not in silly engine laxatives to put in after using inadequate oil or oil change intervals. Now if its an engine with a known history of abuse from a previous owner, then some of the milder purgatives might have a use.
Really with an engine that is 17.5:1 compression ratio huh.....
Save your money and buy good oil and filters instead. It will go a lot farther than an additive in keeping your engine functioning properly. Inquire in Oil Filters and HDEO sections for more information specific to your application.
No need for it, and like it has been said before use good oil and filters.
Originally Posted By: greenaccord02
Save your money and buy good oil and filters instead. It will go a lot farther than an additive in keeping your engine functioning properly. Inquire in Oil Filters and HDEO sections for more information specific to your application.
AutoRX still did more than a good oil and filter did for my new car when I got it.
Save your money and buy good oil and filters instead. It will go a lot farther than an additive in keeping your engine functioning properly. Inquire in Oil Filters and HDEO sections for more information specific to your application.
AutoRX still did more than a good oil and filter did for my new car when I got it.
Originally Posted By: badtlc
Originally Posted By: greenaccord02
Save your money and buy good oil and filters instead. It will go a lot farther than an additive in keeping your engine functioning properly. Inquire in Oil Filters and HDEO sections for more information specific to your application.
AutoRX still did more than a good oil and filter did for my new car when I got it.
Can you quantify "more"?
Originally Posted By: greenaccord02
Save your money and buy good oil and filters instead. It will go a lot farther than an additive in keeping your engine functioning properly. Inquire in Oil Filters and HDEO sections for more information specific to your application.
AutoRX still did more than a good oil and filter did for my new car when I got it.
Can you quantify "more"?
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I'll give you just one example.
91 beater college Taurus. Ran great. Consumed oil by the hour of operation. Post Auto-Rx this turned into months between oil adds.
Best $25 I ever spent on snake oil.
91 beater college Taurus. Ran great. Consumed oil by the hour of operation. Post Auto-Rx this turned into months between oil adds.
Best $25 I ever spent on snake oil.
Well pretty much this last post is the one that pushed me over the edge to order Auto-RX. Just ordered it for my 98 oil burning corolla.
My oil burning is moderate, 1 qt per 1500-2000 miles. So I hope this will help.
My oil burning is moderate, 1 qt per 1500-2000 miles. So I hope this will help.
Now I have a question on how I should use it. I plan to do the oil burning treatment. I have been using synthetic oils for the last few changes.
Now for this treatment phase I will use dino oils. However once I am done, can i go back to synthetic? Is it ok to go back and forth like that?
Now for this treatment phase I will use dino oils. However once I am done, can i go back to synthetic? Is it ok to go back and forth like that?
Youre suppose to use dino or group III synthetic (PP, Synpower ...) for both clean and rinse phases. After the rinse phase you can go back to full synthetic if you want to.
In my experience Auto-RX does clean synthetic lubed engines.
Use non ester oil.
Originally Posted By: greenaccord02
Originally Posted By: badtlc
Originally Posted By: greenaccord02
Save your money and buy good oil and filters instead. It will go a lot farther than an additive in keeping your engine functioning properly. Inquire in Oil Filters and HDEO sections for more information specific to your application.
AutoRX still did more than a good oil and filter did for my new car when I got it.
Can you quantify "more"?
Sure. When my Mazda 6i had seen nothing but PAO synthetics for the first 15k, I started using Auto-RX and MC5w20. Compression only improved mildly (1-2%) but MPGs increased. While the MPG measurements weren't entirely accurate due to so many variables, I knew this ahead of time so I also did fuel usage at idling before and after. I used a scanguage from a buddy and just like in the Taxi Study, fuel consumption during idling reduced after running the maintenance dose.
I did the same thing with the wife's escape and saw the same basic improvements (fuel consumption). I didn't measure the compression on hers after seeing compression improvements in both my 1996 cavalier and my Mazda.
Is this going to dramatically increase the lifespan of my engines? No. Is this going to save me tons of money in the long run? No. I only use it because I feel it will prevent me from ever getting to a point where I'll need to clean things up to restore performance back to factory specs in say like 150,000+ miles.
Originally Posted By: badtlc
Originally Posted By: greenaccord02
Save your money and buy good oil and filters instead. It will go a lot farther than an additive in keeping your engine functioning properly. Inquire in Oil Filters and HDEO sections for more information specific to your application.
AutoRX still did more than a good oil and filter did for my new car when I got it.
Can you quantify "more"?
Sure. When my Mazda 6i had seen nothing but PAO synthetics for the first 15k, I started using Auto-RX and MC5w20. Compression only improved mildly (1-2%) but MPGs increased. While the MPG measurements weren't entirely accurate due to so many variables, I knew this ahead of time so I also did fuel usage at idling before and after. I used a scanguage from a buddy and just like in the Taxi Study, fuel consumption during idling reduced after running the maintenance dose.
I did the same thing with the wife's escape and saw the same basic improvements (fuel consumption). I didn't measure the compression on hers after seeing compression improvements in both my 1996 cavalier and my Mazda.
Is this going to dramatically increase the lifespan of my engines? No. Is this going to save me tons of money in the long run? No. I only use it because I feel it will prevent me from ever getting to a point where I'll need to clean things up to restore performance back to factory specs in say like 150,000+ miles.
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Well that's a good answer. I just can't see their being a compression difference or a cleanliness difference in a DuraMax. As you say though, if you feel like it's a good preventative then that's the value.
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