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Interesting point. Back in 2001 or 2002 when I first noticed 5W-20 motor oil being sold in Pep Boys I went home and did a search on Google and read that Honda was recommending the use of 5W-20 motor oil in some models where previously they were requiring the use of 5W-30. I believe the new...

Umbali, how are things going with your Sebring? Is there any improvemnet?

0W-30 Castrol Syntec has an HT/HS viscosity of 3.5 cP. "GC" Syntec has been shown to be very shear stable. If this were my car I would do an Auto-Rx cleaning with a "Dino" API CI-4/SL 15W-40 motor oil. After that I would give either Castrol Syntec 5W-50 or Mobil 1 15W-50 a try. I agree with...

I agree. If you are convinced that 5W-40 is too thin you might consider using a 5W-50 motor oil. Mobil, Castrol, and Valvoline all sell synthetic 5W-50 motor oils in Europe. Mobil 1 5W-50 PDF

Sorry to hear that. It can't hurt to put on a new filter. Please keep us updated.

Don't worry if you don't have two more ounces of Auto-Rx, just add some more oil untill you bring the oil level to the full mark on the dipstick and you will be fine. Most of the Auto-Rx that you currently have in your oil will still be mixed in with the remaining oil after you replace the...

This is just an educated guess but I think that the old Mobil 1 ATF you have is probably much better than a typical off the shelf Dexron III (H) or Mercon V transmission fluid. I have a 2001 Mazda 626 2.0L automatic and I noticed that the Mobil 1 ATF that I now use is far superior to the Mercon...

Here is another link about the Chrysler 2.7L V6. I thought that the post from Mike Sa was interesting. His comments are in the tenth post. web page Since some of the problems Chrysler is having with this engine may be heat related does anyone think that using 5W-20 motor oil would help reduce...

Here is an interesting link about the Chrysler 2.7L V6. Scroll down to the section about Rod Bearing Failures. web page Be sure to leave the Auto-Rx in for at least 1,500 miles. It would be a good idea to replace the oil filter after about 750 miles since it may become clogged. It would also be...

Some of the discount brands of motor oil don't meet current specs. All the major brands should meet the ILSAC GF-4 specification. Umbali, have you decided what you are going to do? What engine do you have in your Sebring? Are you going to use Auto-Rx? It will be of interest to many here on...

Do you have the 2.7L V6 in your Chrysler? That engine is prone to developing sludge. Give Auto-Rx a try. Be sure to follow the directions carefully. If you have the 2.7L V6 I suggest using an ILSAC GF-4 5W-30 motor oil. Using too thick of an oil may contribute to an oil starvation problem. Do a...

Auto-Rx gets my vote also. Be sure to leave it in for at least 1,500 miles (2,400 kilometers) and use a conventional oil for the rinse phase. I have had great success with Auto-Rx. I was able to stop a rear main seal leak on my wifes 1997 BMW 318i. Others on this message board have reported...

Like medic said some fluids are rated for both Mercon V and Dexron III. Most likely the shop that performed the work on your Subaru used a fluid that is rated for both. Now that the new Dexron III "H" fluid is out it makes sense to produce a fluid that is rated for both Mercon V and Dexron III...

Thanks for the inside information Carpy!

The ACEA A3/B3/B4 version of Castrol Syntec 0W-30 has a HT/HS viscosity of 3.5 cP @ 100 C. I don't know the Noack % but it must be equal to or less than 13% to meet the toughtest ACEA specs.

I forgot to say that this car now has about 72,000 miles. BMW suggest oil changes every 10,000 miles with conventional 15W-40 motor oil. Some dealers have been know to use bulk 20W-50. Two years ago when I first bought this car the engine had a significant amount of sludge and varnish that could...

My wife has a 1997 BMW 318i that had a rear main seal leak for about 1 1/2 years. The leak started right after I began using Amsoil XL-7500 10W-40. With the same Amsoil oil in the engine I added a bottle of Auto-Rx and saw no change after about six months. At this time I also realized that I had...

This sounds like a great idea! I would like to suggest that you include Mobil Clean 5000 and Mobil Clean 7500 in your test. We don't have a single UOA or VOA on either oil yet. I would also like to suggest using a 5,000 mile oil change interval. I am sure that we all are looking forward to the...

I agree with Shannow. Basestock is not an issue. I suggest using an API CI-4/SL or CI-4/SM motor oil. The anti-wear, detergent and dispersant additive levels will be higher when compared with most passenger car motor oils. [ January 24, 2005, 06:47 AM: Message edited by: Sin City ]

It will be interesting to see if the problem continues with the shorter severe service oil change interval now required by Chrysler and also the newly available ILSAC GF-4 motor oil.