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I would like some input from the board on 5W-50 Castrol Syn. for my XKE V12. I now use Rotella Syn. 5W-40 in the Jag. But Rotella Syn. keeps moving up in price. $22/gal. and it takes 3gals per oil change. This car is only driven about 1,000 miles per year. A XKE V12 runs a little on the warm...

Was at Wally World in Bristol, Va. today. They had Mobil-1 0w-30 with the bright green cap on the shelf for $21.97 a jug. First time I have seen it in my area. Also stopped at the Advance Store across the parking lot to buy some Penzoil that was on sale. And the guy behind the counter told me...

I bought a new 08 Toy. Avalon about 3 weeks ago. The OM said to change oil every 5,000 miles. And use 5w-30 oil. What is the boards thinking about when the best time to switch to synthetic oil? 40ford

I am about to buy a used 06 BMW 528i. I was wondering what oil to use on the Long Life set-up that BMW has. I can not get a good clear answer if I should 0w-30 Castrol or 0W-40 Mobil. This is the E60 type car non-turbo. The car has very low miles on it. Anyone have one of these cars? Or have a...

When you blend to obtain a specific wt. is it best to stay same: Brand to brand Syn. to Syn. Conv. to Syn. Half of one brand and half another. I have a bunch of Val.-Pen.-QS that I got on free rebate that I want to use up. I can do the math and make the weights I want. But not sure about using...

AA has QS 5W-20 syn. on close out for .95 cents per qt. I was thinking about a 50/50 blend of 10W-40 QS conventional and 5W-20 syn. for a avg. of 7.5W-30 Or a blend of 10W-30 QS conventional and 5W-20 syn. for a avg. of 5W-27. It is to be used in a 01 Yukon 5.7 engine with 84,000 miles. What...

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I was surfing and ran across Penrite Oil and Australian Co. They had 20w-60 and 25w-70 plus the usual others. It can be gotten from a supplier on the left coast. 40ford

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I was in the local K-Mart today and checking the oil prices. I found about 20qts of 5W-50 SL Syntec with red and black labels with a lot of dust on the qt. bottles. Next row down was 5W-50 SL Syntec with the green and black labels and the new style bottles. (About 10qts) Just wondering how to...

Guys, We inherited a 95 T-Bird with 65,000 miles on it. We have put about 10,000 miles on it in the last 2 years.(total of 75,000 miles now) It uses 2qts of oil in 3,000 miles. Does not leak oil. Switched to Wally World 10w-30 HM oil. When if ever do you all think I might see some improvements...

I was just in Sam's Club today an saw Rotella 5w-40 synthetic boxed in 3 one gallon jugs for $44.46 for 3gals. That's $14.83 per gal. About $2.00 cheaper per gal.than Wally World. I use a lot of synthetic Rotella so that helps somewhat. 40ford

I have a 01 GMC Yukon with 84,000 miles on it. I have been reading on the board that people are changing oil at 20-25% of life left on the OLM or less. Is there a number that shows up on the OLM screen that I am not seeing of the amount on life left. All I am seeing is the yellow screen lights...

I have 2gals. of Chevron Supreme 5w-30 SL rated oil. I wanted to know if it OK to use in 2001 GMC Yukon 5.7L. engine. I am about to roll up on the Auto RX rinse phase. It is the only oil I have on hand that is not synthetic oil.

I was in the local NAPA store and they had their house brand synthetic oil on sale all weights for $3.39 per qt. Who makes it? Also High Mileage oil for $2.39.