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I have a 24,000 lb motorhome towing 5,000 lbs. Currently running the Castrol 0W-30 and have had good results with this oil. This oil can be hard to find, especially on the road. Looking for a gasoline motor oil that is in the upper range of the 30W scale at 100 degrees C that is also more...

I am posting this for another member here (15SilvyEcotec). This is his UOA on his 5.3 Vortec in a 2015 Chevy Silverado.

I am posting this for another member here (15SilvyEcotec). This is his UOA on his 1.6 GTDI EcoBoost motor in a Ford Fusion.

New to us Ford Escape with the 1.6 Turbo direct injected motor. Have been doing a lot of reading on the fuel dilution in the DI motors but can't find a lot of UOA on this motor. Looking for oil recommendations as we will be coming up on the first change. Ford manual requires semi-synthetic with...

Have a 2003 Liberty with the Chrysler coolant that was put in when the heater core was replaced by the dealer. Coolant is a little low and I want to top it off. I have some BMW Coolant that I believe to be a HOAT formulation, which is what Daimler used in Jeeps when they owned them (not sure if...

The front hubs in my Workhorse chassis require a straight 90W GL-5 gear lubricant. There aren't many left on the market and I can't find any locally. Shaeffer's makes several but in all honesty it is totally confusing they have so many. It was recommended that a synthetic not be used due to seal...

I had an interesting thing happen today and wanted to get some feedback. I have had my car on the dyno several times and the results are pretty consistent. Today, the curve was down throughout the RPM range with peak power down approximately 10 hp or 2.7%. While trying to sort out if there was a...

Been a while since I have been on this board and was looking for some thoughts on what oil to run. To date, I have been running Amsoil 5W-30 ASL in my 02 Corvette. (Had been running GC but that supply went away.) I am getting ready to install a new set of heads and bigger cam. Cam has fast ramp...

Is the Redline MTL a suitable fluid for a Corvette T56 (this is for an 02 Corvette) with it's carbon fiber blocking rings and other internal components? Does anyone have long term experience with this?

I admit to not being an expert on ATF, but I am having trouble understanding how Amsoil can meet so many requirements, i.e., Dextron, Chrysler, Ford, etc. I have been looking into a synthetic to replace the AFT+4 in my daugther's Jeep and can get the Amsoil locally. I am nervous about using it...

I store my Corvette over the winter to keep the salt off the car. Last year, I used FP-60 to keep the fuel fresh. With the legislation that recently passed, all of our fuels now have 10% ethanol. Living in a coastal state, with a lot of marina's, I am seeing recommendations for the boaters to...

This should be fun. I sent this sample to Terry for his interpretation and thought it would be worth some discussion here on BITOG. Here is the background, a little complicated, but here it goes. In the fall of 05 I installed a new cam, timing chain, rockers, pushrods with guide plates in my...

Well, unfortunately my 3.1 Pontiac lost the lower intake gasket and I got Dexcool into my GC which only had 900 miles on it. The leak has been corrected, but the inside of the motor is not longer the pristine clean surface that it was just a week ago. I am using LC in the oil (fresh dino oil...

Below is this years oil analysis. I changed from Amsoil 5W-30 to German Castrol 0W-30 and also included Lube Controlin the oil and Fuel Power in the fuel. The other major change was the removal of the Donaldson air filter and installation of a Vararam and K&N filter. After about 3,000 miles I...

I went through all the old posts on this, and found that many were as puzzled as I am on the Kohler oil recommendation, 10W-30 unless lower than 40, then 5W-30. I want to run a good synthetic in this motor as the machine it sits on (zero turn mower) just cost me a pretty penny. I am considering...

Is anyone running GC in an LS-1? I have seen a few posts where people have said the GM truck motors have gotten noisy with this oil. I did a search and can't find any UOA's on this in an LS-1.

After careful review of the "Grease" filter study, I realized that over the last two years I have had two of the most restrictive flow oil filters on my LS-1. These were the Mobil-1 and the UPF44. While my UOA's were OK, upon thinking about this, my motor was ticking last fall just before I put...

I have been reading up a lot on the GC oil. My BMW is due for a change, and the dealer seems to have had a change in heart about using Amsoil. Since the oil cap says Castrol, this seems like a match. Also, my daugther's new Envoy is up for it's first oil change and requires GM 6094M oil, which...

My daughter recently bought an 04 Envoy and we are preparing to do the first oil change. The required specification is GM 6094M. Amsoil lists it on their web site, but doesn't specifically state they test for this or meet it. On the Mobil-1 web site, it is not listed nor does it appear on their...

I have a 94 Pontiac Grand Am with the 3.1 V6. Motor runs excellent but the oil pressure is doing weird things while I drive. It will vary from about 40 psi to 25 psi and back and forth at random. Some have suggested that the oil passages are gummed up and that the motor should be flushed, but...