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    Valvoline ML Sync 5w30, 15,941km, '07 Chev Express

    Originally wanted to do 10,000 km, but ended up going to 16,000 km on oil change for friends work van. Oil was 1/2 litre low, was not topped up between oil changes. The lab actually messed up the results they sent me first and when I phoned and asked why the TAN/TBN was only for the new oil they...
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    Express work van dyno to synthetic recommendations

    I have a 2007 Chevrolet Express 2500 (8,600# GVRW) with a 4.9L. It has 85,000 miles (135,000 km) on the clock. It is in need of some preventative maintenance but aside from that runs fairly well. It is being used as a work van, getting used daily hauling around tools and supplies (500+ pounds)...
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    Spark plug gap

    Hey guys, about to do a tune up on my new-to-me '97 Subaru Legacy 2.2L. I have pretty much always owned North American, RWD, V8 cars/trucks and have recently made the switch to imports. On all my vehicles in the past, as well as other family/friends north american cars, I have usually found I...
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    Recommended synthetic for roller 355

    Hey guys have a recently built roller 355 that was broken in on the dyno and made 400FWHP. Engine is in my 1988 Chev Caprice 9C1. Builder told me bearing clearances were between .0020"-.0025". Currently have Joe Gibbs HR2 10w30 in engine now, plan on running it for the first OCI then want to...
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