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So i just purchased a 2005 Ford GT and factory recommendation is the Motorcraft full synthetic 5w-50 which i guess they also use in the Boss and their other 5.4 supercharged engines. The problem is that i have read a few stories that the company due to emissions removed the ZDDP and now what it...

I have recently gotten into kart racing and have been a member here for a while and gotten great information. I am great believer in synthetics overall. I use Motul 300V for my 900whp supra and amsoil for my other cars. The karting community swears by castor oil which has been around for a while...

Just picked up a 1999 Dodge Ram 1500 with 56,000 miles that appears to be in good condition. I am not sure if the owner used synthetic with this truck or not? What is the best oil for this 5.2L V8? I was thinking about Rotella T 5w-40? What do you guys think or the non synthetic Rotella 15w-40...

This is oil sample from my CLS55 with no make up oil. It has had regular oil changes approx. every 5K since new. This is the first oil analysis.

This is a UOA from my best friends 2006 BMW M6 V10. This oil had a little over 13,000 miles with 2 quarts of make up oil. BMW refused to change the oil under their "maintanance free" program since the oil/service light had not come on. I told him to screw and pay out of pocket. THere is no way i...

Is there a reason to chose the 10w-40 formulation over the 5w-40 formulation? It seems a bit confusing cause the 5w-40 has an HT/HS of 4.51 and the 10w-40 has an HT/HS of 4.19. Usually its the other way around. This is for a high HP turbocharged application. I just didnt know what the 10w-40...

I am thinking of purchasing a good quality/professional lever buffer. I was looking at the buffer that Griot's Garage offers for $129. I have always heard about nightmares on buffers that it takes a professional etc etc. I am wondering if anyone uses the Griot's or another type of buffer that is...

I currently have a K&N 9" conical air filter on my intake for the supra. However, I do not like the idea of an oiled filter. I have been reading quite a bit and had pretty much made up my mind on the AEM Dryflow with the 4" ID and 9" length, which is the largest conical 4" ID filter they make...

I have been on Motul's website for the last 30min and I am so frustrated I want to shoot myself. At first i thought it was my laptop. Then I tried another three desktops and I can't see anything. The menu system sucks. Is this just me, or has anyone gone thru the same thing. Does anybody have a...

I noticed that Redline reports their HT/HS numbers based on the ASTM D-4741 method while AMSOIL reports theirs based on the ASTM D-4683 method. Redline seems to be a tad higher for similar oil type and weight. I wanted to know if Redline is getting higher numbers because their test methodology...

I have a 1995 Toyota Supra with probably over $50K in engine/turbo modifications. The shortblock/head is fully built with decent tolerances. The head has +1mm valves, and high lift crane cams (~11mm). The car will see 20-35psi of boost and will be seeing upwards of 8000rpm. What would be the...