fccs

iTrader: (26)

Used to run royal purple, now I run Amsoil, some of the best **** on the market no contest. Only problem its $11 a quart, 15w50.

TXZ28LS1

iTrader: (5)

ive been using castrol syntec 5W-40 with an AC DELCO filter. works very good for me. i also used regular castrol gtx 10w-30 on my old 2000 z28 and never had any problems too.

dmcgill

Mobil 1 Synthetic 5w30.

jason00ss

iTrader: (2)

i've been sticking mainly with castrol 5w30. now, what filter is everyone running, i go with top of the line fram, i think its tough guard

scritch

iTrader: (1)

mine has k&n oil filter on it.. dont really feel like spendin 11 bucks to put another on it though... changin brands

samson_420

iTrader: (1)

Valvoline 10w-30 only, with a Fram Tough Guard in my Z28

Valvoline 5w-30 only, with a Fram standard in my IS300 < The car has 130k and runs like new. . . This is the only combo of oil and filter that were used.

Vicinity

iTrader: (7)

Where do you get it? I've looked everywhere for some of that. All I could find is regular Castrol... so I used it, and it sucks. I got an oil changes coming up soon, would like to try GCS.

bene

iTrader: (16)

Local VATOZONE. The store in my town keeps them stock. I usually buy them in boxes.

ckJoshZ28

iTrader: (4)

Redline 5w30 here...From what I have seen and heard first hand in dismantling race motors, Amsoil and Redline seem to be the best, and in addition to that I have also read on more than a few web articles that redline uses more base stock level 5 compounds than Amsoil. I have also heard more than one negative review regarding mobile 1, royal purple, Castrol and practically every other brand of oil ever made, those three being the most flamed of course.

Supposed flame arguments - mobile 1 uses base stock 3, rp uses bs 3 and detergents which reduce piston ring and engine seal life, and Castrol leading to a over average amount of build up.

In effort to not butcher what I seem to understand, all oils are made from key base stocks, levels 1 thru 5. Base stock 1 and 2 are conventional, while base stock level 3, 4 and 5 are synthetic, of a purer and higher quality as you go up.

End result is: Hardly any differences on any of our stock / slightly modified, daily driver / weekend warrior, $5,000 to $20,000 4th gens.

Case in point I do not pay full price for my redline and kn filter and if I had to I wouldn't for my 90,000 mile 98 camaro.

I hope this response is received well; most of this information came from my friends working in an engine shop of a respected long island business that is not a sponsor of this site and years of online research. I have also taken audience to a few hour long seminars by Castrol, mobile, royal purple, amsoil and redline.

Cheers

ToBiN!

iTrader: (1)

Mobil1 synthetic. Nothing else in my LS1.

johnnybravo

What sucks about regular Castrol?



That's a serious question.....




Reason I ask, is I couldn't find Havoline this spring, so I went to Castrol GTX. I'd swear my motor is noisier. Maybe it's just because I''m paying more attention, but, it seems a little noisier for longer into warmup.......


Is there anything to this, or is it my imagination?

Vicinity

iTrader: (7)

It's not, my motor is louder too. I noticed a performance drop, too. I don't know what sucks about it, but I know it sucks.

I'm not running it again. If I can't find German Castrol, I'm running Penz Platinum again, I liked it the best.

chadaclysm

just rolled 93,000 on my car and i run M1 10w30 with the M1 filter. no burning, no issues, great oil pressure.

chae

iTrader: (8)

Castrol Syntec 10w30 full synthetic w/ AC Delco filter

SOMbitch

iTrader: (8)

This is some funny **** Just change the oil when you should and it won't really matter what you use nowadays I use GC and change it depending on how hard I beat the bitch Prolly overkill. Guys on here using Wal- Mart brand with good results..... Lots of variables.

INMY01TA

iTrader: (1)

I've been using German Castrol for years but may switch cause I'm tired of the price. May use the Penzoil Platinum, Walmart has 5 quart jug for $20. Royal Purple is terrible and no oil additive is necesary. (restore? Lol) Groups 1-3 are mineral based, 4 and 5 are ester/PAO based. Ohh yeah all these oils have detergants in them too.

johnnybravo

I looked up Penzoil Platinum, it's a synthetic if I read that right. I'm 2nd owner, been running dino oil since I got the car. It's got 53k miles on it. Would it hurt anything to switch to synthetic?

Vicinity

iTrader: (7)

No, not really. Might increase your MPG, though.

blk99sleekbeak

iTrader: (2)

Yea there was a post on here somewere about a month or so ago were some agency tested a bunch of Royal Purples claims and alot of them turned out to be false and they filed alawsuit to make RP stop advertising a bunch of that stuff.Never really heard anything else about it tho.I personally run Q horsepower 10w 30 and i really like it.doesnt burn any and doesnt seem to break down very easy and no sludge

Edit:I run a napa gold filter too.

Adam86

iTrader: (10)

UOAs of Penzoil Platinum have shown it to be a very good oil. As far as stuff you can get from Wal-Mart, it's probably the best. Mobil 1 has been overrated ever since they went to group 3. Redline is great but spendy. Ams and German Castrol round out the top end.