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Ok, my apologies for questioning the analogy, the initial question was answered, I was curious if the NG oil could have some negatives if mixed with standard oil, I havent used or heard much about it before.

Water isnt anything like oil... but thanks for the irrelevant analogy.

Thanks for the replies, was mainly concerned about it being made from NG to mix with another type. I have a mix of older SN oils Im using up and dont have anything to use the 3 qts of Pennzoil by itself so will mix with 2 or 3 qts of another SN in a car that uses 10/30, will probably be...

Anyone see any problems with mixing a few quarts of 10/30 SN Pennzoil synthetic made from natural gas with a couple qts of petroleum based synthetic or blends? I have a few quarts of the Pennzoil but not enough for a full change so thinking of adding a few qts of another brand normal oil. I...

Being they are so old I shake them occasionally to avoid additives settling. Think I read that somewhere. :unsure: I do use oldest first, been going off a supply Ive had since around 2005-06, oreillys had a rebate sale that whatever you bought on their list got refunded to you 100%, most items...

I have a lot of older oils that Im just now getting around to using, most are SM but some are SL. They are stored in a insulated & sometimes heated garage so never freezing, I shake them every year or so. Just curious how old is considered too old to use, would be for a mid 2000s toyota or...

thanks! i ended up getting the Mobil 1 for the valvooline sale price.

again, just for general comparison of the 2... you know, like how the VOA section here has hundreds of voa's posted for members to be capable of divining which oil is better?? :unsure:

thanks for the input, i know its mostly opinion based & both are great products that will work fine. i was more curious if anyone knew for example if Mobil 1 has more anti wear additives vs the valvoline. Mobil 1 is usually $14/qt at this store & valvoline is $10, on sale for 7.99. i will...

uh, a VOA would show what additives each one has, just for a general comparison, you know, like the "VOA" subsection on here does? most members here dont just flip a coin...

tried searching for current voa's on these 2 but didnt find much. which brand is the better one? im a valvoline user & found it on sale but they are out of stock, the store offered the mobil 1 at the same sale price. mobil 1 is quite a bit more expensive & i assume its the "better" brand... just...

Originally Posted by BigD1 PQIA tested the 5W-20 SN+ blend not that long ago. https://pqia.org/citgo-supergard-sae-5w-20-api-sn-plus-synthetic-blend-motor-oil/ thanks for the link.... looks like that is the blend, not full synthetic, buti imagine the 5/20 is close enough to the 5w30 for the...

i tried doing a search for some recent samples of citgo 5w30 superguard synthetic but seem to only find older info from 5-8 years ago. does anyone have or know of any recent used oil analysis or VOA's of this oil? thanks

Originally Posted by john_pifer I've done it twice, following the writeup on Tacoma World. I used the jumper method to verify fluid temp. Went with Toyota WS fluid both times. Local dealers gave a little discount for buying 15 quarts. No issues other than it being a messy process with having...

Originally Posted by Tedd Originally Posted by ka9mnx You do not need .... ZDDP in that engine. You're probably right. But, it's also at least possible that you're wrong. If it's all the same to you, I'd like to use an oil containing zinc, even if I "know" it's not necessary. It won't hurt...

i would suggest valvoline maxlife over any of those. where is the leak you found? high mileage oils wont really stop or help a leak from a physically damaged gasket or seal, they only "condition" good seals to last longer. you might want to try adding an actual leak fix or seal sweller type of...

i use the 15w40 delo400 in my other car with a mild flattappet cam. good stuff. i will have to stock up on some before it changes. havent looked at the rotella 5w40, i went with the delo after they changed the rotella back in 07, but sounds like the t6 is a good oil & might consider it for the...

Originally Posted By: 05LGTLtd Keep in mind that a synthetic 10w30 wil have less VII than a conventional oil. Also lower noack and better teost. All good qualities for a oil cooled turbo engine. fully agree with that... but keep in mind that those qualities arent really needed for car that...

Originally Posted By: semaj281 I'm not sure I follow the "flow equals cooling" logic. Flow increases with heat which also results in a fluid pressure drop. Flow suffers with more viscosity, but higher viscosity oils can help keep moving parts separated to dissipate heat. Oil technology has...

Originally Posted By: lexus114 Originally Posted By: firebird72 Originally Posted By: jayg Looks like the image isnt showing up now. Here is the VOA specs for Maxlife HDD 15w40. Strong Zinc numbers. Do you daily drive this or park it outside? If not, I wouldn't hesitate to run it year round...