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I've done some searching and can't find much. Is anyone using a 10W-50 for any Harley engines? For example, the Redline 10W-50's (Auto and Powersports) provide similar 100C viscosity, lower 40C viscosity, better VI, and similar NOACK as the 15W-50 and 20W-50 versions. The HTHS of Auto is 5.0...

OK, I did something I normally would never do, which is to buy a new car without doing a lot of research. I picked up a 2012 Malibu with the 3.6L VVT DI. I was looking for a CTS with the 3.6L but stumbled upon a deal on the Malibu I couldn't pass up. Anyway, I got the car and then started doing...

I've been searching all afternoon but haven't found anything solid. I heard about the OLM recalibration on some of the engines due to the timing chain but assume a new 2012 would already have any updated calibration, plus a larger oil sump of 6 qts. My question is, what is an average OCI for a...

Hi all, I just picked up a car, 2006 Malibu SS 3.9L, that I will be using when the weather does not allow me to ride to work, so basically from October through March and when it rains. I was originally thinking of using Amsoil SSO in it because that's what I use for my other vehicle. But I'm...

For anyone running Redline 20W-50 M/C in their shared sump motorcycle, please offer up your opinions. Any problems? Anything else of note good/bad (noise, vibration, MPG, etc.) Thank you.

I haven't been spending nearly as much time on the forum as I used to. When I joined I was on for several hours a day, reading and learning as much as I could. Lately I come on a few times a month just to catch up. It now seems like every time I'm here I have to muddle through post after post of...

First off, this is not my car so I don't know the interval for certain or the type of oil. The owner states that it was Castro Syntec and that the oil was changed every 3,000 miles. This sample was taken after about 700 miles on the OCI. The filter was a K&N, which I saw. I have a pretty good...

Here is my second run on M1 HM 10W-30. After a disappointing first-run, I ran it again with an Amsoil EaO oil filter (same as first run). I'm also running an EaA air filter. I put on a new PCV valve towards the end of the run and also did a top-engine clean right before the oil change. I checked...

I was hesitant to post this until I did a second sample because the results on this just seemed so bad, but I received a couple request to post it, so here it is. I used 6 +/- quarts of M1 HM with an Amsoil EaO-30 filter and an Amsoil EAA air filter. The oil had 7,032 miles on it and the engine...

This is a 50:50 mix of Redline 20W-50 and 20W-60 in my 2004 Road King. The oil was in the engine for a little over 14 months but only had 963 miles on it. I know the sample is not apples-to-apples with the previous Amsoil 20W-50 racing oil but it is what it is. The oil did quiet the engine down...

Looking for any observations/opinions of the Amsoil SVT 75W-110 gear lube in a Harley transmission. Per Amsoil: "It delivers better viscosity protection than SEVERE GEAR 75W-90 and better fuel efficiency than SEVERE GEAR 75W-140." I was going to try Redline's Heavy Shockproof or their new...

Just throwing this out there as I haven't done any research on this yet, but, will there be oils that go beyond the current 0W weight for cold temperatures? It seems that the 0W-20 and 5W-20 weights are relatively thin at 40C and below, could we have a -5W specification in the future? I'm...

I was going to post this as an interesting article but it is not an article, so here it goes. Moderators, please feel free to move to this another forum if it is not appropriate here. This was sent to me without a confidential, secret or copyrighted label so I feel that it is OK to post it here...

I dumped out a mix of Amsoil TSO ( 1) The piston slap improved. It is quieter and much shorter in duration than the thin ASL. Although its been a while since I had the TSO in (a couple months) IIRC, it is quieter and shorter than the TSO was. I honestly can't remember if it is quieter than the...

This oil was put in at a little over 120K and taken out at exactly 130,000.0 miles. It is the Amsoil 0W-30 Series 2000. The filter is an Amsoil EaO30 which is a little longer than the OEM spec'd filter. There are a lot of variables with this OCI but I ran the sample anyway just to see how the...

Before I saw BITOG I never had more than 1 case of oil on hand. Now I've got nearly 150 quarts and my wife and friends think there is something wrong with me. Do I keep my addiction a secret from now on or just make them feel like they are the ones that haven't seen the light?

Total mileage on vehicle is 7,539 and oil was in service for one year (this OCI ended early November, 2006). Filter was HD 5 micron filter and make-up oil was cheapo Trak-Auto 20W-50 added about 3-4 ounces and actually overfilled it slightly. Most of the mileage was put on during a trip to...

The car had a total of 33,013 miles at the time (11/12/06). An Amsoil EaO23 filter was used and 4 ounces of VSOT was added halfway through the OCI, no (other) make-up oil added. Total sump w/long filter about 4.9-5 quarts: (actual first/averages second) ALUMINUM 3/3 CHROMIUM 2/1 IRON 18/19...

Since M1 is now in question, what oils do we "know" are synthetic group IV or V oils? Until I hear different I'm assuming Amsoil (except XL), GC, and Redline are, but any others?

I just read this link About Esters posted by Tom NJ and, besides the wealth of information about base oils in general, there is a section that talks about POE's. For weeks now I been reading posts from Ron AKA about how Redline gets worse MPG and HP because of its high HTHS. Doing a real (i.e...