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Interesting since GM does not have a 5w20 requirement or recommendation yet.

Well my daughter got her license, so I added another car to the stable. I purchased a 2012 Cruze for her. I was surprised to see it uses 5W30 as the only oil recommended, with a 0w30 option if -20 degree weather is a regular occurrence. Dexos only, but we have had that discussion many times...

I have owned all full size SUVs for the past 20 years. A new one every other year, with new tires after 1year on most. Lots of tire experience. I will skip every tire I didn't like and share the pertinent details. I have used both the Michelins and Alenzas on full size SUVs. Both made it to the...

I have the Altimax HP on my Mini Cooper. Not a comparable car, but can give my impressions. Road noise is lower than the Pirelli and GoodYears on it previously. Handling is fine, more than adequate given the car you mentioned. Rain performance is very good. Light snow is fine, and even frozen...

Update One month into the comparison. We have had ice storms, plenty of rain, snow, salted roads, and the Corolla sat outside and was used in all of it. I washed the car this weekend. The water beading and shedding looked equal across all three products. After drying, I used a microfiber towel...

American Refining makes both a break in oil specific for this, and high performance oils specific for older cars. Good reputation with the classic car gurus. Great customer service for questions, sending data, even doing a free analysis to prove other lab errors. Look into them as well. The oil...

About 5000 miles on them so far. I believe they lowered my fuel economy by .5 mpg or so, but not a scientific comparison. Good in rain, handle well in dry conditions. Had some light snow and ice, did well. Good traction both to move the truck and to stop the truck. Definately recommend these...

Ebc Ultimax.

I have the 2010 Tahoe with that same engine. So far I have used M1, M1EP, PP, Napa Synthetic, and QSUD. I have not had consumption issues with any of them. I change at 6-7k (50% OLM), and have used only ACDelco filters. No difference in any of the oils from a performance/fuel economy aspect. Not...

I emailed them and here is some of the data they sent: The 5W-20 you have inquired about is SN/GF-5. All SN/GF-5 oils meet very similar requirements dictated by API.Typical values are: HT/HS – 2.9; Noack – 14.8; TBN – 7.0; VI - 140. To meet these specs oil can be formulated in mineral oil...

Well, the beauty of having an 18 year old with his own car... He came home last night with a 1 foot tall, 6 foot long scratch/scuff down the passenger side. Deep, but not through the clear coat. Spent 2 hours buffing both doors. Mostly out, but I can still notice it. I doubt anyone else will...

I sure hope no one shakes my Tahoe vigorously up and down foaming my oil...

Thanks for the questions. All 3 were liquids. Duragloss sent the free sample, but I already had the other 2 products so I did not need to ask. I have emailed Griots in the past with questions and they were responsive, but I never asked and they never offered to send a free sample. I am...

My 65 sits months on end. When I was using M1 10w30 it had the death rattle at startup. Since I switched to Brad Penn racing oil, it has not, even after 5 month winter layup. I always use MC oil filters, so the only difference is the oil. Maybe a low tech group II ( guessing) oil does stay...

Ok, so the showdown of 3 synthetic polish sealants. I thought I would try to do an analysis on the three sealants. All claim to clean imperfections while leaving a brilliant shine, lasting up to 6 months. I thought I would compare them for the 4 categories most important to users: ease of...

Emailed them for a sample of their DG 105 polish sealant. 3 days later a bottle showed up in the mail, enough to do a small car. Great customer service. I am going to do a test panel to compare performance.

Here are some additional specs they sent me via email. -Zinc: 840 ppm -Calcium: 2110 ppm -Phosphorous: 760 ppm -Sodium: 490 ppm -HT/HS: 3.07 mPa·s Very responsive company when you ask for info.

Both dealers by me won't budge from $7.99 a quart. That is how I arrived at my economics. If I could get it for $5 / quart I would heed your advice and use it.

I thought about what you said. The difference in oil price is $27.50 every oil change. Toyota was clear that mine is spec'd for 5k oci to maintain warranty. So I would need about a 7% increase in fuel economy to offset the oil price difference. Both are SN approved oils (substitute ST 5w20 if...

Local NAPA parts carries this stuff, and lots of it. SN rated. I googled it but can't find anything on a semi synthetic from WH. Is it a safe assumption that this is the Amalie semi synthetic re-badged under their WH name? They are selling this at $2.50 qt, so same price as dino Supertech at...