Cant find where to add new oil to the rear end. found the plug down low to see if you have oil in rear end but see no place to add new oil!

Yes on the rear diff. There's a plug on the back of the housing about 2/3rds the way from bottom. Remove that plug and stick your finger in to first knuckle and bend it down to check the fluid level. If you get oil on your finger tip, it's got oil in it. If not, put oil in till it's at the bottom of said hole. Put the plug back in a tighten it and You're done.

well let me see you have 4.6L engine you need 7.5 quarts of oil with new oil filter.to do the oil change you need large drain pan and oil filter wrench and a metric wrench to remove oil drain plug you need a funnel also.you need first start engine let it run for 5 minutes to warm up thin out the oil so it will flow better.once engine warm up.turn off the engine.open you hood.now safely raise support vechicle on jack stands make sure vechicle parked on solid level ground.place large drain pan under oil pan remove oil drain plug you need a 15m wrench remove drain plug let all old oil drain out until you see slow drip then reinstall oil drain plug dont over tighten drain bolt.then place drain pan under the oil filter then remove oil filter using oil filter wrench or large channel lock pliers.once you remove oil filter wipe oil filter seal surface with clean paper towel.take new oil filter add oil to new filter then install new oil filter hand tight take filter wrench turn oil filter one half more turn dont over tighten will damage oil filter seal.make sure oil pan drain plug is in place. then lower vechicle. remove oil filler cap on the valve cover add new oil to the engine using a funnel to keep from spilling oil all over the valve cover and exhaust manifold.add all 7.5 quarts to oil crank case wait until oil settle down in crank case check oil dip stick oil level should be at the full mark on oil dip stick.dont over fill crank case.once you finished oil level correct crank engine check for oil leaks at oil filter and oil drain plug. if engine running okay you see no oil warning lights you ready wheel and deal.

sounds like the differental fluid is low, find the filler plug on the rear end and take the plug out, stick your pinky finger in this hole and see if you get fluid on your fingertip, if not add 85W gear oil in the filler hole until the fluid just does start to run out

1. Park the vehicle on a level surface.
   
2. Raise and safely support the vehicle such that it is level.
3. Place a suitable drain receptacle underneath the rear of the transaxle.
4. Remove the filler plug on the side of the transaxle, near the halfshaft flange.
5. Note the oil level; it should be even with the lower edge of the filler hole.
6. If the oil level is low, add the proper type and viscosity as necessary to obtain the correct oil level.
7. Install the filler plug, and tighten it securely.

just finish doing a freinds truck same problem
engine high idle oil pressure ok engine at low idle hot
o oil pressure also hard start start after sitting a few minutes hot
or in am cold

found 1- wrong oil filter--not depresing dain out valve to crank case
2- oil cooler by pass valve rubber seal ruptured (fairly expensife oil filter base kit )
(only way to get this rubber)
3- found oil gallery plug pop out of oil injection pump(cant buy)
located small frost plug kit installed and peen area
reassemble and test all work out properly


4-could also be the oil gallery in the block at front or rear
they are also block of with frost plug cap
very pore desine should be treaded plug and locktite

Hello, there is a fill pluf on the passenger side of rear end to check the fluid level and to add fluid. here is some help on this.

Remove the rear axle fill plug.

Inspect the lubricant level. Specification
The lubricant level should be between 0-10 mm (0-0.4 in) below the fill plug opening.

If the level is low, add lubricant until the level is even with the bottom edge of the fill plug opening

totally clean out your rear end,taking back cover off and spray with cleaner and air hose. reinstall with new gasket glue and add new oil, but put in 2 bottles of anti slip differential oil, then top with gear oil. make several figure 8 's til rear end fully distributes oil thru out rear end. if rear end is dirty you may have to repeat this action after5000 km. diff slip oil can be purchased at dealer

Both the front seal and the rear gasket are fairly easy fix, But don't let anybody over torque the seal, You can add more oil, and let it sling all over the place, your car will never rust, the filler plug looks like a bolt with a square hole in it, the end of ratchet or breaker bar will fit it, 1/2 inch, you can fill it up there. Hope this helps.

get under truck go to the back of the rear-end housing shoul be a plug u can take out and u can kinda see in you can add the gear oil in that same hole you can only add oil up to the bottom of hole then put plug back and go on to next project

On 91 vehicles there's a 17mm allen screw on the side towards the left front wheel. Open it add the oil there on a level surface and fill till oil reaches the hole and starts coming out. DO NOT FILL OIL FROM THE TOP where what seems to be a plug. It's actually the timing marks and houses the clutch. Put oil there and you'll need a new clutch.