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UPDATE: I already had 16 qts of Amsoil Max-Duty Synthetic on hand, so I went to an independently-owned shop that had changed my oil twice before. It will be my last time going there; not because they are a bad shop but because I hate the drive through the myriad of traffic lights even though...

The only approved Mobil oil on my owners manual oil list is Mobil HDEO Whatever that is. I think it’s dino oil and not syn. But, I hasten to add that Amsoil isn’t on that list either. I prefer a full syn because when I go north I pass through several hundred miles of blistering desert heat in...

Whatever the Ford dealer serviced it with when it came to their lot from Enterprise Car Rentals. I usually will change out to all syn differential oil, but have not yet since it has two (4X4). As for the 6R140 I have no idea what is in it. Probably factory juice. The truck has a 7-years warranty...

If a Cummins isn't a good test, I don't know what is! Thanks for your quick answer, Joe. Thanks, Javi. I had to wait for 20 yrs to get the diesel I have long wanted. Before that, I had a V10 in my 2003 Superduty, which was a compromise. My truck was a Texas rental owned by Enterprise. It still...

For the first time since I bought my 2019 6.7 F250 in December 2019, I am going to switch oil brands. I have used religiously Amsoil's Signature Series Max-Duty Synthetic Diesel Oil 10W-30 and will be switching to Mobil Delvac Extreme Heavy Duty Full Synthetic Diesel Engine Oil 15W-40. The...

I argued for years (decades) against using K&N filters from almost day one of their introduction. Paper filters always won out for cleaning the air and their CFM rating exceeds the oily gauze type.

HONDA!!!! I have had Honda generators for 25 years or more and they have never let me down. Now I have two new EU2200is and they are great. Honda is always original and progressive. Clones do not usually equal quality. I burn propane only but I have a NG jets kit. Propane stores indefinitely...

I love mine I bought from Upland Optics. https://www.uplandoptics.com/collections/all

Originally Posted By: Rob_Roy Sounds like you have a great towing rig. I have a '99 F350 with a V10 and it has been a tough truck, despite the engine being neglected before I owned it. I have settled on 5w-40 HDEO for mine. I tried it one summer because I had a few gallons left, and noticed...

Originally Posted By: dnewton3 Originally Posted By: pops91710 By full I meant all synthetic and not blended with dino oil. I think the main reasons we used synthetics in the USAF was the heat factor. I was told by the jet boys it was better in jets due to their high temperatures. I never meant...

Originally Posted By: kschachn

Originally Posted By: kschachn Originally Posted By: pops91710 I'm more prone to believe Amsoil is a full synthetic from what I have read here over the years. I have heard that Mobil 1 wasn't a true full synthetic, but Mobil disputes that. Apparently for a short time they were not making a full...

Originally Posted By: Jim_Truett Thank you for the detail in your response about your fuel economy. My 6.4 will get 8mpg towing a 9000lb tandem axle toyhauler through the California hills, and 10-11 towing responsibly on flat ground. Given my maintenance and repairs you should definitely be...

Originally Posted By: Ducked Originally Posted By: zeng Oil consumption of 1 quart per k miles in a 100k engine is simply alien to my countrymen. Mine too. Havn't used quarts since primary school arithmetic class sometime in the early '60's. Here in the USA we still use quarts, only...

Here in the USA we still use quarts, only slightly less than a liter which measures 33.8 ounces. Sorry, you'll just have to figure out what that means in metric.

I'm more prone to believe Amsoil is a full synthetic from what I have read here over the years. I have heard that Mobil 1 wasn't a true full synthetic, but Mobil disputes that. Apparently for a short time they were not making a full synthetic after the ravages to their plant by a hurricane...

Originally Posted By: Olas For towing at 114 degrees I'd use Maxlife 5w30 in that application. Thanks, Olas. I used to be a big Valvoline fan. However, I would prefer to stay with Mobil's full syn. Valvoline is a blend. Bear in mind my local temps here are rarely over 104 and usually never...

Hello Memebers! This is my first post here, so bear with me. I have long been an avid fan of two fully synthetic oils; Mobil One and Amsoil which I have used exclusively in my 2003 F250 Superduty with a 6.8L V10. For my last four oil changes I have dropped using the Amsoil brands strictly...