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I'll probably stick with the NAPA 15-40. I also use it in my 4 stroke outboard for ten years noe. That gets a once a year oil change and that is usually 50 70 hours. Yamaha says 100 so I'm good. I've sent samples to Blackstone and they come back perfect every time. Most 4 stroke outboard oil is...

Update. I got two 5 qt jugs of Shell Rotella Gas Truck 5-30 at Amazon for $18 and change each. It was here in 4 days shipped free. Changed the oil and the engine is much quieter at start up and after 2 minutes super quiet. It could be the new oil VS old used oil. It rates pretty good and comes...

Anyone own a Jeep Grand Cherokee Limited? I have a 2019 with a 3.6 L 4V engine and so far so good. The tranny worries me a bit because of the lifetime fluid and the 45 minute procedure to check it. I have a good extended warranty because I don't work on vehicles any more. Anyone with troubles?

About a quart and a half.

I use REC90 in all my power equipment including my outboard and have never had fuel issues. I have in the past used 97 with 10% ethanol and had issues and burned up a weed eater engine. Got a new one and went to Rec90 and have not had an issue. Some places here there is 87 unleaded but not near me.

I have a Northstar generator with a Honda GX620 20 H.P. It has around 100 hours on it. I used Napa universal fleet 15-40 in it for the first two oil changes. It calls for 10-30 or 30W. I see now Honda has a synthetic oil for their power equipment. I am now thinking of using a 10-40 synthetic...

I just got a 2019 Jeep Grand Cherokee with the 3..6 liter 4 valve engine. It with Pennzoil full synthetic 0-20 and I will keep it on that for warranty and free oil changes for 60,000 mi. It seems to run just as well and quiet as my daughters Caravan that is a 2015 and it called for 0-30. I don't...

I have a 2019 Jeep Grand Cherokee Limited with the V-6 engine. It calls for 0-20 and I think it has Pennzoil synthetic in it. What oil would you uae? Just a question because I never liked Pennzoil.

Well with the help of everyone's input and the Jeep dealer I will use whatever they put in as I get free oil changes for 36,000 miles. After that maybe Mobile 1, 0-20. I have been using Mobile 1 for about 25 years and no troubles.

Me being old school it took me a long time to get used to 10-30 motor oil. We just bought a Jeep Grand cherokee and it calls for 0-20. The 0 worries me and I would like to use 5-20. I just don't know if that's a good idea while under warranty. I will definitely use Mobile 1 as I have been for...

Walmart used to outsource their house brand oil to Warren Performance Products, a well known oil manufacturer. I don't know if it is the same now or not.

I have been using NAPA Universal Fleet 15-40 in my four stroke outboard, edger, Kawasaki LM engine and a V-twin 20 HP Honda on a generator now for ten years,. Never had a problem. This is a diesel rated oil and has a good amount of ZDDP 1200 ppm in it. All of these call for 10-30 or 10-40 except...

Ring Free is the only Yamaha product I use. For engine oil I have been using NAPA Universal Fleet 15-40 and Mercury oil filter which crosses over to Yamaha no worries. I now spend around &25 for an oil change. Lower unit I use Bombardier (Johnson) SPX. The Yamaha $ strokes are flat tappet motors...

I have a friend who is one of The top Yamaha mechanics in my area (S Florida) and when he told me to use Ring Free I never thought twice about it. I hace been using it for 8 years in my F115, always runs great.

I have been using NAPA 15-40 Universal Fleet oil for 8 years in my F115 Yamaha. Never had a problem. Just two weels ago I walked away while flushing the motor and forgot to turn on the water. Came back to rubber smoke and an alarm. Melted the pump bad enough to ruin the upper gearcase seal...

I use NAPA 15-40 Universal fleet in everything I own except my vehicles. Lawnmower with a Kawasaki FJ189 10 years, Yamaha F115 outboard about 300 hrs and my generators one with a B&S10 HP and one with a Honda Vtwin 20 HP none seem to care what oil I use and I have tried others. The NAPA is cheap...

I read Yamalube was made by Chevron, but you can bet whomever bids the cheapest wins. With that said I also saw a test on the top marine oils and Yamalube was 9 out of 10 tested. Very low rust resistance and early shearing. My 2005 F115 does not specify a FWC oil cause they did not make it then...

I use NAPA Universal Fleet 15-40. It is made by Valvoline.I use it in my Honda 20 HP V-twin, Never a problem. Last time I used it was for 5 days after Irma, and it was in the 90's here in S Florida.

There is a product called Ring Clean and you can get it at West Marine. Works as good and I found it on sale about 6 months ago for $16. Same mix 1 oz to ten gallons of gas. I use only REC 90 and Ring free/clean whatever is easy to find. Also using NAPA Universal Fleet 15-40 motor oil. It has a...

I've always used M1 Syn, had a 1993 S-10 2.8 that got M1 15-50 never seemed to hurt it. I have an unlimited supply of NAPA Universal Fleet 15-40 , maybe I'll use that for one oil change and see. BTW I use Purolator or Delco filters. My wife's Envoy has the 4.2 I-6 and it is much more quiet. Same...